Everyone's heard of deadlifts, but many skip them, often because they fear injuring their low back. Many ill-informed doctors even advise against deadlifts for this reason. But the deadlift may be the most functional exercise for real life, improving the strength of your posterior chain muscles and increasing bone density in the spine. If you're new to the deadlift, start light to perfect the technique (read more on deadlift form here). Your legs and hips should be doing the bulk of the work, not your back.