You don’t NEED to lift heavy weights to strengthen your bones! Here’s what the research shows. • Aerobic exercise alone boosts spine density. Brisk walking, cycling, or water aerobics improved lumbar spine BMD by ~2% versus no exercise in postmenopausal women (PMID 40188285). • Moderate-impact activities work wonders. Exercises generating 2–4× bodyweight (like jump rope, heel drops, or light plyometrics) increased hip and femoral neck BMD—even without maxing out the bar or LHS (PMID 33357834). • Mix it up for maximum gains. Combining lighter resistance with aerobic training ranked #1 for improving bone density, but pure aerobic was nearly as effective (PMID 40188285) • Movement reduces fractures. But the only program to show a significant reduction in fracture risk employed jumping and balance exercises, including walking, knee bends, leg lifts, heel rises and drops, dancing, stamping, stair climbing and stepping up and down from benches (PMID 15889312). Why did that trial work? It...