Above: PGIA SAR-rest-and-recovery. Sarsential 7: training off, sauna on [ skipp training, rest and recover ]. 

More on elevating core body temperature, sauna-benefits and more: Dr. Rhonda Patrick interviewed on Barbell Shrugged's podcast 'Biomedical Research, Nutrition, and Supplements w/ Dr. Rhonda Patrick - EPISODE 119'

More (and more):

More about regularly scheduled off days and active recovery days :