Pulling weeds, raking a lawn or digging a hole can strain the back in painful ways. Frequent squatting and kneeling can also do harm. In fact, any movement that requires lifting, twisting or turning – carrying bags of soil or fertiliser – can injure back muscles.
Avoid squatting and bending as much as possible. Instead of bending over to work in the garden, kneel on a soft cushion. Use a wheelbarrow for hauling heavy objects. But most importantly, strengthen your stomach muscles.