Massage guns: do they work or just rattle?

Percussion massagers went from physio rooms to carry-on bags. Before buying one, here is what the research does - and does not - support.

What the evidence supports

Short-term relief and flexibility. A session with a massage gun reliably reduces the feeling of soreness and can temporarily improve range of motion - effects measured in minutes to hours, not days.

It feels good. Genuinely worth something: pleasant, focused pressure is relaxing, and relaxation is part of recovery.

What it does not do

No good evidence shows massage guns speed healing, "break up scar tissue", flush lactate (a myth - soreness is not a lactate problem), or outperform simpler tools. The honest comparison point matters: controlled studies of foam rolling - a tool costing a small fraction of a premium gun - find similar short-term effects on soreness and flexibility. There is no strong reason to believe a £300 device beats a £15 roller for the outcomes that are actually measurable.

If you use one, use it well

Big muscle groups only - quads, calves, glutes, lats. Slow passes, a minute or two per area, letting the head do the work rather than pressing hard. Avoid bones, joints, the front of the neck, and anything that produces sharp pain - numbness-into-bruising is not extra benefit, it is a warning. And never use it over an injury you have not had looked at.

Who should actually buy

Honest sorting: if you enjoy the ritual and will use it while watching television, a mid-range gun is a pleasant luxury - comfort has real value. If your goal is measurable recovery benefit per pound, a foam roller plus a five-minute routine wins on evidence and price - here is that routine, done properly. Athletes travelling with teams and no foam roller are the strongest use case. Everyone else: roll first, gadget later - and remember sleep beats every device on this shelf.

Sources

• WHO — Physical activity (fact sheet)
• CDC — Physical Activity Basics