I had one a couple of years ago, it was done by the NHS under general anasthetic and I had a mech put under the muscle to stop it popping out again, I am a 30 year old male, reasonably fit. I walked out of the hospital, albeit in a bit if pain and very slowly. I was pain free when walking within 10 days, riding very gently within 3 weeks and riding properly within 6 or 8 weeks.
Cycling was generally fine, the things I had trouble with were leg presses and the like when you have to extend your entire body under tension, I would feel the wound streching which wasn’t overly pleasant.
2 years on it gives me no issues at all, very occasionally I can feel a strech under the skin where the mech is but this is very rare and is just a bit wierd rather rather than painful.
I hope this helps but if you need anything more specific feel free to ask.