Drink. Actually being hydrated can let your body survive activity.
I had a bad experience once with de-hydration and am now a reformed hydrator.
I used to suffer aches and pains the second day after (e.g. The Tuesday following a weekend). As a side effect of avoiding suffering from dehydration I've cured my general aches, now I just have the injuries Ive caused over the years, but not additional aches
You don't need any fancy regime and weird healthy stuff, just keep your body hydrated. Bring water, even if it's the big bottle of own brand stripes label water
Don't take so called 'energy drinks' they are just sugar and caffeine which just queue up your body to crash later
I do use electrolyte sports drinks such as SiS and High 5, water will do you just as good on its own but the electrolytes do the science stuff of pushing it into your system. Gel packs pretty much give an instant hit
Look out for offers on them, and you'll often find High5 sports packs in Halfords and even TKMax
The High5 cycling pack comes with a good bottle, the running pack bottle isn't very big as its designed to be carried in the hand. Both have a varying mix of gels and powders or tablets for adding to water
You should also stretch before activity - But don't make the mistake of getting out of the car and suddenly doing stretch exercises, ease your muscles into warming up. There's. no need to feel self concious about stretching, general walking around and moving some muscles may suffiece
As long as I don't crunch a knee pad or twist a leg then drinking cures me of the aches i used to experience