Is it normal for me to be turned on by being in physical pain?

I guess, on paper its fine, everyone has their wierd kinks. However, always and I mean ALWAYS take cautionary measures before doing anything fucked up. Some people like spanking and pinching and stuff but do not go over the line and do something that might do irreversible damage/ danger your life.

Sexual masochism is very normal. I fantasise about being violently raped and murdered

U guy or girl?

Masochist ppl get turned on by physical pain and by being humiliated/degraded, So do you get turned on by the pain alone or the idea of being called masochist pig, whore, dirty slut ,etc...
also turn you on?
if you get turned on by the pain alone then that means that your body is producing more endorphins than it should.

Nope.

Might have something to do with doing reps and taking time to catch your breath while working out and while you're running you're not stopping, ideally, and every time you lift your legs and arms you're helping your body pump blood which would spread adrenaline and other things

From what I've felt, your limbs start to feel numb and being physically tired starts to not be a problem, resting actually causes the pain to come back

This seems normal since people get turned on by different things all the time. However what worries me is if this obsession turns into something more. Hopefully, what your doing doesn't harm you or other people.

Masochist

I get spanked and caned a few times every week, love every minute of it and the rubbing, squeezing, fingering and fondling that goes with it.