free weights – classic strength training tools such as dumbbells or barbells
weight machines – devices that have adjustable seats with handles attached either to weights or hydraulics
medicine balls – weighted balls
resistance bands – like giant rubber bands – these provide resistance when stretched. They are portable and can be adapted to most workouts. The bands provide continuous resistance throughout a movement
your own body weight – can be used for squats, push-ups and chin-ups. Using your own body weight is convenient, especially when travelling or at work.