Bodyweight vs Dumbbells vs Kettlebells: Which Should You Train With?

If you have nothing and want to start today, use bodyweight. If you can buy one thing and want to keep getting stronger for years, buy a pair of adjustable dumbbells. If space is very tight and you want conditioning as much as strength, buy one kettlebell.

Load is not the main driver of muscle growth. A meta-analysis comparing low-load and high-load training found similar muscle growth when sets were taken close to failure, with heavier loads giving an edge for maximal strength. A study comparing push-ups and bench press at matched muscle activity found similar strength gains. The tool matters less than how hard and how consistently you use it.

• Strengths: costs nothing, works anywhere, quiet, and builds control and body awareness.
• Covers well: squats, lunges, push-ups, core work and holds.
• Runs out at: loaded hinges and heavy pulls. A Romanian deadlift needs something to hold, and rows need a bar, a table or a towel and door.
• How to progress: harder variations, single-leg work, slower tempo and higher reps.

• Strengths: small, steady jumps in load for every pattern, and each side works on its own.
• Covers well: goblet squats, Romanian deadlifts, rows, presses, split squats and carries.
• Runs out at: very heavy lower-body loading, where a barbell eventually takes over.
• How to progress: add reps until a weight feels easy for 12 to 15, then move up.

Adjustable dumbbells save space and money compared with a full rack, and they make the next step up in load easy to take.

• Strengths: compact, durable and built for swings, cleans, snatches and carries.
• Covers well: hinges, carries, goblet squats, single-arm presses and rows.
• Runs out at: small load increases. Jumps between bells are large, so progress comes from reps and harder movements.
• How to progress: more swings per set, single-arm variations and longer carries.

The swing is the kettlebell's signature: a hip hinge done explosively that trains the back of the body and your breathing at the same time. A controlled trial found that a six-week kettlebell swing programme improved both maximal and explosive strength in physically active men.

1. Nothing, for the first few weeks. Learn the patterns with bodyweight and see what you'll stick with.
2. Then one tool that removes your biggest limit: adjustable dumbbells if you want steady strength progress, or a single kettlebell if you want swings and conditioning in a small space.
3. Later, the other one. Mixing the two gives you almost every movement you need at home.

For a kettlebell, choose a weight you can swing for 15 smooth reps and press overhead a few times. For dumbbells, choose a set that covers both your lightest press and your heaviest squat or hinge. Our home functional fitness guide has a sample session for each.

Because all three work, it makes more sense to compare yourself with people who train with the same kit than to regard bodyweight as the lesser option. That is how Crucible Fit handles it. Every Crucible comes in bodyweight, dumbbell and kettlebell versions, and the kit you own decides your division for the ranked week. Your time is measured against people with the same equipment.

Your first Crucible is on us: get Crucible Fit on the App Store and train with whatever you have.