Situps and leg lifts don't destroy your back. Doing them improperly can destroy your back. Doing them properly can really improve core strength and make you a

Situps and leg lifts don't destroy your back. Doing them improperly can destroy your back. Doing them properly can really improve core strength and make you a much safer athlete, as core strength is needed for most activities you do in life. Unfortunately most people are never truly taught how to exercise their core properly. (I'm certainly no expert, but have had a couple of sessions with trainers who actually know what they're doing.)