
Train leg power twice a week: jumps, fast step-ups, pistol progressions. Strong, fast legs over years go with a sharper brain later, even between identical twins.
P Evidence: promising. Good studies, but small or few. Use it and keep checking.
In 324 female twins, leg power predicted 10-year change in thinking and later grey matter, also within identical pairs (Steves et al. 2015, observational twin study, 🟡) · via Louisa Nicola.
Not medical, legal or financial advice.
In The Ecosystem every framework comes with a daily action, a room that checks in, and the full library.