Journal

Plan your workouts and meals and write down every bite you eat. This will keep you honest, and can help you recognise things that trip you up.

Water

Fluids can do wonders for your waistline. A recent study found that after people drank 500ml of water, their metabolic rates increased by 30 per cent within 10 minutes, peaking 40 minutes later.

Cash

(Bear with us here...) In a recent study by Visa, people who pay for food by credit card were found to spend 30 per cent more than those who paid with cash.