William Finney, personal trainer, replies: These exercises will give you strong and flexible forearms and may also help prevent RSI. As all you need is a newspaper and elastic band and they can be done anywhere - even in the office if you don't mind the odd bemused look.
Newspaper crumble:
Place five sheets of newspaper on a table and put your hand palm-down in the centre of them. Now scrunch them into a ball.
Try with each hand and use more sheets as you get stronger.
Rubber band stretch:
Place a rubber band around your fingers and open and close your hand.
Do 20 reps and swap hands.
Add more bands to increase the resistance.
Forearm stretch:
Extend your right hand straight out in front of you palm facing forwards, fingers up.
Gently pull back the fingers of your right hand, holding the stretch for at least 15 seconds before reversing the move and stretching the hand downwards.