Training

Training

This page covers the practical side of training — programming, exercise selection, recovery, and daily movement. For the science behind why muscle matters (sarcopenia, myokines, mortality data), see the dedicated muscle module.

Training is not optional. Cardiorespiratory fitness is among the strongest predictors of all-cause mortality — associated with greater risk reduction than many traditional factors including smoking, diabetes, and hypertension. Resistance training reverses age-related muscle loss and is the primary proven treatment for sarcopenia. You need both — one does not replace the other.

What this page is — and isn’t

This is a general-purpose guide to the principles that matter most for health and longevity. It is not a comprehensive training manual, not a muscle-building optimisation plan, and not a sport-specific programme. It does not replace a qualified personal trainer, coach, physiotherapist, or the community of a group class.

If you already train with a coach, a CrossFit box, a running club, a martial arts gym, or any group that keeps you moving and accountable — keep doing that. The best programme is the one you actually follow.

Every movement is better than no movement. Walk, dance, swim, play with your kids, carry groceries, take the stairs. The goal is not to optimise every session — the goal is to never stay sedentary. Do what makes you happy, do it often, and let the details follow.

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Key takeaways

• Resistance training ≥3×/week with progressive overload — this reverses muscle loss and strengthens bone
• Zone 2 cardio ≥150 min/week — builds the aerobic base and improves fat oxidation
• HIIT 1–2×/week on top of zone 2 — pushes VO2max ceiling
• Move through the day — steps, stairs, walks; separate from formal training
• Sleep 7–8h minimum — recovery happens during sleep, not during training
• Track lifts, track steps, test VO2max and body composition (DEXA) periodically

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For supplement and product reviews, see klatiCHECK.

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Resistance training

Why resistance

Resistance training builds muscle, strengthens bone, is associated with improved insulin sensitivity, and releases myokines that regulate metabolism and brain health. It is the only intervention proven to reverse sarcopenia — the age-related muscle and strength decline that begins around 30 and accelerates after 50. See the muscle module for full evidence.

Frequency

Training each muscle group at least twice per week produces significantly greater hypertrophy than once per week at the same total volume. The practical minimum for health-span benefits is 2 sessions per week; 3–4 sessions is optimal for most people.

klatiPRO recommends minimum 3 days per week resistance training. This allows full-body or upper/lower splits that hit each muscle group 2–3 times per week.

Volume

Meta-analysis data suggests a graded dose-response, with most research examining ~10–20 hard sets per muscle group per week in trained individuals, and higher volumes tending to produce greater hypertrophy. More is not always better — recovery must match volume. Start at the lower end and increase only when progress stalls and recovery allows.

Progressive overload

The stimulus must increase over time. Without progressive overload, the body has no reason to adapt. Methods:

• Increase weight (primary driver)
• Increase reps at the same weight
• Increase sets (volume)
• Decrease rest periods
• Increase range of motion

Track your lifts. If the numbers aren’t going up over months, something needs to change — load, nutrition, sleep, or recovery.

Exercise selection

Compound movements cover the most ground with the least time:

Pattern	Example exercises
Squat	Back squat, front squat, goblet squat, leg press
Hinge	Deadlift, Romanian deadlift, hip thrust
Horizontal push	Bench press, push-up, dumbbell press
Horizontal pull	Barbell row, cable row, dumbbell row
Vertical push	Overhead press, landmine press
Vertical pull	Pull-up, chin-up, lat pulldown
Carry	Farmer’s walk, suitcase carry

Isolation work (curls, lateral raises, leg extensions) supplements compounds — it does not replace them. Prioritise the big patterns, add isolation for weak points.

Proximity to failure

A systematic review with meta-analysis indicates that sets taken within a few reps of failure produce greater hypertrophy stimulus than sets stopped well short of failure. Not every set needs to be to failure, but most working sets should be close. Going to actual failure on compound lifts increases injury risk — save it for machines and isolation.

Rest periods

How long you rest between sets affects both strength and muscle growth. Research suggests longer rest periods (~3 minutes) tend to produce greater increases in both strength and hypertrophy compared to shorter rest periods (~1 minute) in trained individuals. Shorter rest may feel harder but does not necessarily produce better results.

As a general guide:

• Strength-focused work (heavy compounds): 2–5 minutes between sets
• Hypertrophy-focused work (moderate loads): 1.5–3 minutes
• Endurance / metabolic conditioning: 30–90 seconds

Deload and periodization

Training cannot increase in intensity forever. Planned deload weeks — periods of reduced volume or intensity — allow accumulated fatigue to dissipate and prepare the body for the next training block.

A common approach: train progressively for 3–6 weeks, then reduce volume by ~40–50% for one week. Signs you may need a deload: persistent joint soreness, stalled progress despite adequate sleep and nutrition, unusual fatigue or motivation loss.

Periodization — systematically varying training variables (volume, intensity, exercise selection) across weeks and months — supports long-term progress. The specific model matters less than the principle: structured variation prevents stagnation and manages fatigue.

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Cardio training

Zone 2 — the foundation

Zone 2 is low-intensity steady-state cardio at ~60–70% max heart rate. You can hold a conversation but it requires effort. Research suggests this intensity range supports mitochondrial adaptations — increasing the density and efficiency of mitochondria in muscle tissue (older evidence).

Practical minimum: 150 min/week of zone 2 activity. Walking, cycling, easy running, swimming, rowing all work. More is better, with no observed ceiling for mortality reduction.

Zone 2 improves fat oxidation, cardiovascular efficiency, lactate clearance, and recovery capacity. It is the base that makes everything else work better.

HIIT — high intensity interval training

HIIT produces significantly greater improvements in VO2max compared to moderate-intensity continuous training (older evidence). Meta-analysis data indicates HIIT increased VO2max by ~5.5 mL/kg/min vs ~3.5 mL/kg/min for moderate-intensity continuous training in healthy adults.

HIIT is a powerful stimulus but carries higher recovery cost and injury risk. It should be built on top of a zone 2 base, not used as a replacement.

Effective HIIT protocols:

• Sprint intervals: 20–30 seconds all-out, 1–2 minutes rest, 4–8 rounds
• Long intervals: 3–4 minutes at 90–95% max HR, 2–3 minutes rest, 3–5 rounds
• Tabata-style: 20 seconds work / 10 seconds rest × 8 rounds (4 minutes total)

1–2 HIIT sessions per week is sufficient for most people. More than 3 may increase overtraining risk without proportional benefit.

VO2max — the survival metric

VO2max (maximal oxygen uptake) is estimated to decline at ~0.4–0.5 mL/kg/min per year — roughly 1% — in untrained adults, though rates vary considerably between individuals and sexes (older evidence). It is one of the strongest predictors of longevity — low cardiorespiratory fitness is associated with greater mortality risk than many traditional risk factors.

In one large retrospective study, the most fit individuals were associated with approximately 80% lower all-cause mortality compared to the least fit — and the association was dose-dependent across the entire fitness spectrum, with no observed ceiling of benefit. See the muscle module’s VO2max tables for reference values by age, sex, and mortality risk.

To improve VO2max: combine zone 2 base (3–5 sessions/week) with HIIT (1–2 sessions/week). Zone 2 builds the aerobic engine; HIIT pushes the ceiling.

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Warm-up and mobility

Warm-up

A structured warm-up prepares the body for higher-intensity work and is associated with reduced injury risk. Meta-analysis data from sport injury prevention studies indicates structured warm-up programs are associated with a ~36% reduction in injury rates — though most available evidence comes from youth sport populations, the principle of progressive tissue preparation applies broadly.

A good warm-up has three components:

• General movement: 5–10 minutes of light cardio (rowing, cycling, jogging) to raise core temperature and heart rate
• Dynamic stretching: leg swings, arm circles, hip openers, thoracic rotations — moving joints through full range of motion
• Movement-specific preparation: light sets of the exercises you are about to perform, gradually increasing intensity

Static stretching before lifting is not recommended — it can temporarily reduce force output. Save static stretching for after training or dedicated mobility sessions.

Mobility

Static stretching alone does not clearly prevent injury — a systematic review found no significant association between stretching and reduction in total injuries (older evidence). The value of mobility work is in maintaining functional range of motion, joint health, and movement quality over time — not as an injury-prevention shortcut.

Practical approach:

• Foam rolling and dynamic mobility before training
• Static stretching or yoga after training or on rest days
• Target areas that limit your compound movements — ankles, hips, thoracic spine, shoulders

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Daily movement (NEAT)

Non-exercise activity thermogenesis (NEAT) — walking, climbing stairs, household tasks, standing — burns more calories than most people realise. In sedentary individuals, increasing NEAT is associated with meaningful improvements in metabolic health and body composition (older evidence).

A meta-analysis of 15 international cohorts (~47,000 adults) found that more daily steps were associated with progressively lower mortality risk, with the steepest reduction between 3,000–8,000 steps/day. Above 8,000 steps, benefits continued but flattened. Every 1,000-step increment reduced mortality by 6–15% depending on baseline.

klatiPRO targets ~8–10k steps as a practical guide, not a rule. The key principle: move through the day. Walks, stairs, errands on foot, standing breaks — these add up and are separate from formal training sessions.

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Mental health

Exercise is one of the most effective non-pharmacological interventions for depression. A large 2024 network meta-analysis of 218 randomised trials (~14,000 participants) found moderate reductions in depression across all exercise types — with walking/jogging, strength training, and yoga showing the strongest effects. Benefits were proportional to exercise intensity and appeared consistent across different baseline severity levels.

Exercise is also associated with reduced anxiety symptoms, improved sleep quality, and better cognitive function — though these outcomes are less extensively studied than the depression data.

The mechanism is not fully understood but likely involves multiple pathways: neurotransmitter regulation, neuroplasticity, inflammation reduction, and sleep improvement. Whatever the mechanism — the effect is consistent across studies. This is another reason why any movement matters more than the specific programme you follow.

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Recovery and timing

Training breaks tissue down. Recovery is when it rebuilds stronger. Without adequate recovery, more training produces worse results.

Sleep

Sleep is the most important recovery variable. Growth hormone peaks during deep sleep. Muscle protein synthesis is elevated during sleep. Memory consolidation — including motor learning — happens overnight. 7–8 hours of quality sleep is the minimum for anyone training seriously.

Training timing

• Workout sessions at least 5–6 hours before bed — evening training raises core temperature, cortisol, and sympathetic tone, all of which interfere with sleep onset
• Most people perform best in late morning or early afternoon for strength
• Caffeine can enhance performance when timed correctly — but the last dose must be 10–11 hours before bed

Nutrition timing

• Protein intake of ≥30g per meal, distributed across 3–4 meals per day — total daily protein matters far more than post-workout timing; the “anabolic window” is largely a myth when daily intake is sufficient
• Creatine 3–5g/day supports strength output, recovery, and brain function — timing within the day matters less than daily consistency
• Carbs before or after training support glycogen replenishment; front-load most carbs earlier or around training windows
• Hydrate with electrolytes when sweat loss is high — especially during training, sauna, heat, or fasting

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Weekly programming example

This matches the klatiDAY routine from klatiPRO.

Day	Type	Focus
Monday	CrossFit / strength	Full-body functional
Tuesday	Powerlifting / strength	Squat, bench, deadlift
Wednesday	CrossFit / conditioning	Met-con + gymnastics
Thursday	Powerlifting / strength	Overhead press, pull-ups, rows
Friday	CrossFit / strength	Full-body functional
Saturday	CrossFit / conditioning	Longer workouts, team WODs
Sunday	Mobility / active recovery	Stretching, walking, light movement

Zone 2 cardio can be integrated as warm-ups, cool-downs, or separate sessions (walking, cycling, light running). The minimum effective dose from research: 150 min/week zone 2 + 2 resistance sessions. The klatiPRO recommendation of 3× resistance + 1–2× cardio exceeds this minimum.

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Research