After exploring nutrition for muscle gain, let’s look at training to build muscle and why rest matters.

Ready?

What training routine helps build muscle?

For muscle gain, 8 hours of sleep and eating habits rated 10 cannot replace appropriate training focused on strength and hypertrophy.

A calorie surplus without suitable training is more likely to increase body fat than the muscle you want.

To stimulate hypertrophy, metabolic stress can play a role, but mechanical tension is particularly important. Muscles must overcome resistance by producing force.

A muscle-building routine involves strength sessions with gradually increasing demands. This is “progressive overload”, increasing the training stimulus over time.

How can you apply progressive overload?

Increase intensity by lifting more weight than previously.
Increase volume through more repetitions or sets.
Increase frequency by adding appropriate sessions.
Increase time under tension by lengthening repetitions, often called TUT or Time Under Tension.

Why rest matters

Rest is often overlooked. Muscle growth occurs during recovery and anabolic processes, rather than only while lifting.

Sleep supports an anabolic state and rebuilding and regeneration, contributing to tissue renewal.

Adequate rest gives the body time for processes involved in recovery and growth.

Stress management also matters. Persistently high cortisol can compromise muscle gain.

Stress can impair falling asleep and alter hormonal processes related to protein synthesis, including growth hormone, testosterone and melatonin.

Supplements for muscle gain

Be clear from the start: supplements are not essential.

They may offer a small extra beyond nutrition, training and rest, which account for more than 90% of the results in the approach described here. Supplements are a poor investment if those foundations are missing.

If training, nutrition and rest are already organised, consider which supplements may support performance in strength training:

Whey protein

This can be thought of as a food.

It provides high-quality protein with a complete amino acid profile, but it is still simply protein.

If food already meets your daily protein needs, whey is unnecessary. The body has a limited muscle-building response to extra protein.

More intake does not automatically mean more muscle protein synthesis.

Whey protein comes from milk, processed to separate and concentrate its protein.

This produces 3 types of whey protein:

Whey concentrate: around 35–85% protein.
Whey isolate: around 85–95% protein.
Whey hydrolysate: hydrolysis breaks proteins into shorter chains, potentially increasing absorption speed.

Creatine

Creatine helps replenish phosphocreatine stores, supporting high-intensity performance.

It can help delay fatigue during explosive strength exercise and support subsequent recovery, relevant to gaining or maintaining muscle.

Caffeine

Caffeine may help improve power, delay fatigue and support aerobic and anaerobic performance.

A protocol discussed uses it 45 minutes before training at around 200–400 mg, subject to individual suitability.

The approach described includes use on training days and cycling every 8 or 10 weeks, with 1 or 2 weeks off. Learn more in episode #2 of our podcast: caffeine and sporting performance.

How much muscle can you gain?

Muscle gain is slow and generally slows further as you become more trained.

It helps to set realistic expectations.

One influence on muscle-building potential is genetics.

Even with hard work in the gym, a personalised nutrition plan and favourable genes, gains are finite. An estimate sometimes given is 20 kg over a lifetime, rather than a universal limit applying to everyone.

How long does muscle gain take?

When do the gains happen?

Gains are usually larger at the beginning and slow as you approach individual potential.

An estimate discussed is 4 or 5 years to reach around 90% of potential.

After that, progress becomes slower and may require more detailed programming.

A weight-gain rate of 0.25–0.50 kg/week is sometimes used to favour lean mass while limiting fat gain. For advanced athletes, 2 kg per month may be unnecessary or counterproductive, adding more fat than intended. A more conservative increase of 0.25–0.5% of body weight may be considered in an individualised plan.

Assess progress individually and adjust intake upwards or downwards to support the intended body-composition change.