Exercise alone can’t create the lean muscles you want or need to boost metabolism. The right amount of overall nutrition and specifically, protein, is a critical part. Less exercise (with more purpose) and more food (also with more purpose) make over 50 fitness achievable!
Freebie about muscle loss:
It takes Leucine: American Journal of Physiology – Endocrinology and Metabolism Published 1 August 2006 Vol. 291 no. 2, E381-E387 DOI:10.1152/ajpendo.00488.2005