If you want to do it and are physically able I say do it. I went back to school at 48 and became a massage therapist all the while working a full time job. I ran rings around the 20 yr olds. If I hadn't gotten sick and unable to work or do much of anything really, I would be (at 58) hiking around Ireland or in Australia in the outback camping. Ireland trip would have come first.
I narrowly missed having to bungee jump for my 40th birthday. Thank goodness. Ran my mouth but by darn I would have gone through with it if I had to. I never let age stop me from doing anything. Just health and there is nothing I can do about that.