There is a phrase in some gyms that state
"Pain is weakness leaving the body"
Yes, all that pain you experience during and after a body training routine is just in the weak mind, but with discipline, desire and determination to let your mind take control of the body and ignore that non injuring sensation, you will be the very best you can be in the short gift of life you have. Toss out all those excuses and set the goal to get into that swimwear you spotted on Halle Berry.
Age is irrelevant, especially if you chat with 86 year old body builder Ernestine Shepherd who only started her training program late in her 60s. Only you can make you the best, and now is the best time to start on that path.