I'm a keen boxer and I don't do it purely for fitness or weight loss, I'm off meat and eggs at the moment plus zero dairy, only fish and vegetables - I go boxing straight after work most of the time for about 2 hours of horrendous training and sparring, like I said I'm keen, because i want to take it very seriously, meaning I want to make money from it. So work and boxing are kinda equal to me, I use the gym down stairs for mostly squats/deadlifts don't feel painful next day rarly anyway just need a good stretch before you start skimming, after about 2-3 weeks the pain kinda goes mostly - on the other hand doing biceps is a killer for Plastering the next day.
I'd feel more pain, if I was a blob that couldnt protect himself against anything that offers you out in the big bad world