Free weights
Dumbbells, barbells, plates, and kettlebells allow flexible movement paths and broad exercise selection. They also require you to control the load and your body position.
Weights Explained
Weights and Weight Training
In fitness, weights are external loads—such as dumbbells, barbells, kettlebells, or machine resistance—used to make an exercise more challenging.
Direct answer: weight training is one form of resistance training. The equipment provides the load; the program determines whether you build strength, muscle, power, endurance, or a combination.
Dumbbells
Barbells
Kettlebells
Machines
Machines and cables
Machines and cables provide guided or pulley-based resistance. They can make setup simpler, add stable volume, and train patterns that are awkward with free weights.
How to progress weight training
- Repeat a stable exercise selection long enough to learn it.
- Record load, repetitions, sets, and relevant technique notes.
- Add repetitions inside the target range before making a small load increase.
- Reduce load or volume when recovery or technique clearly deteriorates.
Weight Training FAQs
What is weight training?
Weight training is resistance exercise that uses external loads such as dumbbells, barbells, kettlebells, weight plates, or machines.
Which weights are best for beginners?
Use equipment that lets you learn the movement safely, adjust load gradually, and follow a repeatable program. That may be dumbbells, machines, cables, or a combination.
How heavy should my weights be?
Use a load that makes the target repetitions challenging without losing control of the range of motion or the planned work.
Evidence used
The 2026 ACSM guidance notes that free weights, machines, bands, bodyweight, and home-based options can all work; equipment choice is less important than consistent, progressive training.
Evidence-informed guidance
Updated August 31, 2026. Follow equipment instructions and use appropriate safeties, supervision, or medical guidance where needed.
Best next step
Put the weights inside a plan
Choose training that tells you which exercises, loads, sets, repetitions, and progressions to use.