I'm by no means old (27) but spending the majority of my teens to early adult hood 14-24 training and fighting (Muay Thai) paired with a labour intensive job, my body is pretty knackered already, constant aches and pains, I can't shrug my shoulders without my collar bones clicking, so I'm screwed as I get older 🤦♂️🤣.
Top tip for you guys.. deep heat is a no go, it heats the surface of the skin giving you a nice placebo of warmth and heat but doesn't really penetrate deep into your muscles. Do yourselves a favour Get some tiger balm instead, they come in red and white, I recommend to get the red stuff, but try both and see which your prefer if the red is too intense for you, They're only small, but a little goes a long way. I used to swear by this when I was fighting. Also invest in some Thai oil (Namman) and rub this onto your 'injuries' or 'weak' points (for me it's usually legs, knees, ankles, lower back) before a skirmish or exercise, it does wonders in preventing injuries like pulled muscles etc, I used to put this on every day before I trained, be warned it does have a strong smell but it's not a bad one at all, I love it! (smells very similar to deep heat) if you've ever been in a fight gym, you will know exactly what I'm talking about. All very good stuff and a worthy investment for messed up bodies and/or preventive measures!
Lastly, stretch, stretch and stretch! Both before and after skirmishes. The amount of injuries and niggly pains that can be prevented by getting the muscles warm and stretched out before a game day is immeasurable. Everyone (including myself) often neglects this, but we shouldn't.. We might not realise it when we're out there blasting people with our new little pew pews, but Airsoft is intense on the body! You've got heavy gear, you're running, jogging, crouching, crawling, jumping, Airsoft is a workout in itself, we just don't realize it because we're too busy having fun 🤣.