It took me until my 50s to stop being self-conscious about my slender body and skinny arms. Exercising more helped a bit but it was mostly in my head. My advice - love yourself now! (The sign was for a Twitter pro-nudity campaign)
M 39, 6β1, 185. Iβm trying to get my body to a place where I love it. Iβm not quite there yet but Iβm making some progress. I love the positive vibes on this subreddit