[EvenThisAcronym]

> Exercising might reduce the loss of muscle mass to some extent

That does indeed seem to be the case, at least for a 16:8 intermittent fasting regimen (an 8 hour eating window with 16 hours of fasting): https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5064803/

"Our results suggest that an intermittent fasting program in which all calories are consumed in an 8-h window each day, in conjunction with resistance training, could improve some health-related biomarkers, decrease fat mass, and maintain muscle mass in resistance-trained males."