... Unless the things on your back are MASSIVE ... then you lift with your heart. Don't worry. You now have a massive Boner which balances the weight ... Plus you're hunched over anyway ... you MIGHT be able to hide the counter-weight in front.Remember kids: lift things with your legs, not your back.
Remember kids: lift things with your legs, not your back.
Always stretch and flex before engaging in lifting, and don't carry on for too long. Strained muscles can pull oddly and unexpectedly, resulting in injury for seemingly no reason.