DIY Weights.

The weight of your body is the best resistance training bit of kit possible. It's always available, and it's easy to monitor your own progression, as the move from five press ups with your knees on the ground to 50 full ones would be hard to miss.

In magazines and fitness DVDs the use of water bottles and tin cans is often advocated, but in all honestly a can of beans in each hand is not going to make much difference. It is possible to make a good kettlebell using a sturdy re-usable supermarket bag, as the weight can be increased and bathroom scales used to work put just how much you are lifting.

The only disadvantage is being a lot bigger than a kettlebell, a bag of cans can be quite cumbersome, and some exercises involve swinging the bell about, which with a bag, could result in flying cans breaking TV screens. However, simple lifts, whether with one or two arms are fine, such as this-