I'm fast approaching age 50 and really struggling with my body's changes that seem to have happened overnight. In particular my stomach area and lower biceps. Crepey, looser skin. Is there ANYTHING that can be done or is it simply inevitable? Right now I'm doing 80 Day Obsession (working to combat the butt sag too) which has quite a few core stuff in it already but should I add more? More biceps? Something?