Warming up and down
You don't just walk up to the biggest weight you've ever seen in your life and try to pick it up. Your body must be prepared for the stress. Mostly, this will come down to the body being warm, and muscles forewarned a little. Preparation on the day is also intrinsically tied to your body's flexibility; are you actually even supple enough to perform the lift you want to? Muscles can stretch and contract according to how they're used. If your exercises do not provide a full range of motion i.e. extending and contracting to the full, then you run...