Reality check: I am turning 48 next month. For me I get tired more easily, do not have the same strength as when I was 38, I can only work-out 5 consecutive days as opposed to the 6 I use to be able to do, I have to constantly watch my form when lifting weights to avoid an injury, my back gives out more often, I've begun to loose muscle mass......blah blah blah.............so essentially it sucks. On the good side, my resting pulse is 54 bpm, lipid profile is awesome, glucose level is normal - health wise, I am in great shape, better than when I was 28 and had hypertension and 20 was pounds overweight. Despite my age, I can still beat most younger men in my cross fit class, including my partner who is 36. I just think those older men who go around saying how awesome things are , are either kidding themselves, are in denial, are were particularly unhealthy when they were younger to begin with.