Meso Training Readiness

Last updated 11 July 2026. This page explains who Meso is designed for and what the evidence says about the age at which resistance training is appropriate. It is general information, not medical advice.

Who Meso is for

Meso is designed for adults. Resistance training is safe for teenagers too, but Meso is a self-directed hypertrophy program that pushes progressive overload toward the harder end of each set, so if you are under 18, and especially under 15, we recommend starting under the guidance of a qualified coach, with the agreement of a parent or guardian and a health professional. Get comfortable with good technique on the movements before chasing heavier loads.

What the evidence says

• Supervised resistance training is safe from childhood. The 2014 International Consensus on youth resistance training concluded that structured, well-supervised resistance training is safe and beneficial for children and adolescents when technique comes first (Lloyd, Faigenbaum et al., 2014).
• The "stunted growth" idea is a myth. Growth-plate injuries in supervised youth training are rare and are linked to unsupervised maximal lifts or poor form, not to resistance training itself. Major bodies advise avoiding true maximal (one-rep-max) attempts and competitive power or bodybuilding lifting until a young person is more physically mature (Faigenbaum et al., 2009; American Academy of Pediatrics, 2020).
• Muscle growth ramps up after puberty. Before puberty, most strength gains come from the nervous system rather than added muscle size, because the hormones that drive muscle growth are low. A hypertrophy program like Meso is best suited to people who have gone through puberty.

In short: the limiting factor is not a hard age, it is supervision, technique, and physical maturity. For an unsupervised hypertrophy app, mid-teens and up is the sensible starting point, with younger or less experienced lifters getting hands-on guidance first.

Not medical advice

Meso provides training guidance, not medical advice. Consult a health professional before starting a training program, particularly for a young person or anyone with a health condition or injury.

References: Lloyd RS, Faigenbaum AD, Stone MH, et al. Position statement on youth resistance training: the 2014 International Consensus. British Journal of Sports Medicine 2014;48(7):498-505. Faigenbaum AD, Kraemer WJ, Blimkie CJR, et al. Youth resistance training: updated position statement paper from the National Strength and Conditioning Association. Journal of Strength and Conditioning Research 2009;23(5 Suppl):S60-S79. Stricker PR, Faigenbaum AD, McCambridge TM; American Academy of Pediatrics Council on Sports Medicine and Fitness. Resistance training for children and adolescents. Pediatrics 2020;145(6):e20201011.