I started lifting weights again at the ripe old age of 35. To reiterate what has already been said, regular exercise has had nothing but a positive impact on my life. I lift weights for about 3 hours a week, Mondays, Wednesdays, and Fridays and I also do about 45 mins of cardio after my weight sessions. I had lifted weights before but not on a regular basis but this time around I gave stuck to it. I noticed a change in my physique with the 1st 6 weeks and my body is responding more and more all the time. My mental wellbeing has also taken a massive boost. My T suggested doing this and as I have said I have never felt so great. My mood swings have nearly disapeared and my self confidence with who I am is great.
The only thing is to speak to your Doc before going on a gym regime and if you a little older I would suggest a daily multi vitamin and some cod liver oil.
I don't want to be massive or anything like that but seeing your body improve subtly over your weights will give you a great ego boost. It did me
. Oh and I quite drinking at the same time and again that was a smart move.
Good luck and enjoy the results.