Despite our best efforts at good posture, sometimes you just can't avoid stooping. When you're gardening or doing chores that require you to bend over, make sure to keep your knees bent and your back straight.
Same thing goes for when you're lifting objects: keep your body upright as much as possible since maintaining a natural lumbar curve is a better option than an all-out stoop. Lifting with a rounded back can put unwanted pressure on your spinal column, potentially injuring your low back.
According to the American Academy of Orthopaedic Surgeons, if you're going to lift something: