Strength & movement

Why lifting heavy matters more now than it did at 30

Muscle and bone respond differently in this decade. Strength training is one of the highest-return things you can do — and it's rarely presented as urgent.

By Ruth Kelleher 7 min readLast reviewed July 2026

Expert reviewed

Sofia Marchetti, Strength & Conditioning Specialist

Reviewed for clinical accuracy against current UK guidance.

Bone density declines fastest around and just after the final period, and lean muscle becomes harder to hold onto. Resistance training is the intervention with the strongest evidence for both, and it also helps sleep, mood and insulin sensitivity.

What 'enough' actually looks like

  • Two or three sessions a week, not six
  • Loads heavy enough that the last two reps are genuinely hard
  • Compound movements: squat, hinge, push, pull, carry
  • Progression over months, with recovery treated as part of the plan

Sources & further reading

  • Royal Osteoporosis Society: Exercise and bone health
  • UK Chief Medical Officers' Physical Activity Guidelines

Last reviewed 08/07/2026. We review clinical content at least every 12 months.

This article is educational information, not medical advice. If something feels urgent, contact your GP or emergency services.