How active do I need to be?

You should aim to do 30 minutes of moderate exercise five times a week. It may sound like a lot, but it isn’t as daunting as it first appears.
Moderate exercise means being energetic enough so you:

• breathe a little heavier than normal, but aren’t out of breath
• feel warmer, but don’t end up hot and sweaty.

You don’t have to leap in at the full amount.

• Build up slowly at a pace that suits you
• You don’t have to do a solid half hour either. Find three ten-minute slots each day if that suits you – or two quarter hours.