Note. If you buy a few random workouts (because they can even be 1, 2 or 3 workouts) and do them cyclically, training every day
it may happen that among them there will be no "off" day
then after 4 days of uninterrupted training you should take a day off (or walk for 1-2 hours).
Ebook list of subjects
(Number of topics to choose from:38, sorted randomly)