How to Avoid Gardener's Ache

[Jonathan55]

You do it at work and at the gym or yoga don't you? Don't you? So do it in the garden too. 
When picking up bags of potting mix, bend your knees and keep your back straight and engage your lower abs (if your not sure how to engage your abs talk to one of us or get along to Pilates or a personal trainer). 
When you're out there weeding for hours do some of it kneeling, and some crouching; have a variety of postures.