I have read at our age over training can spike cortisol and make midsection fat increase. What is considered over training ? And is this true??

I have a schedule on my refrigerator of what muscle groups I'm training each day. My workouts cover two body parts except for legs, which get a complete training session dedicated to them. But I continue to wonder if I'm giving too much rest to each group. adding in a session for ab work, cardio, and some exercises that are not the basics, what I call "secondary, very specific" (like forearm work and inner-outer quad work) . Each muscle group gets about 5 days rest before I hit it again. I'm feeling good and in good overall shape, but am beginning to think it's too many days before I hit a muscle group again, and could probably get away with 4 days rest for a muscle group. Guys--your thoughts and experiences, please...

Thoughts on use of the sauna. Just recently started at 60 including sauna and it has been a game changer.

Hi Keith. What exercises would recommend for the lower back?

When you have a full time job and on the side are part of a startup then time for exercise is limited. When you on top of that deal with a son with extreme OCD daily life is not easy. I still manage to do workout lifting weights, but cardio is skipped. I wonder how other deal with balancing job, workout and cardio?