- Ignore the phone. Next time you follow a home workout DVD, make sure you're free of all distractions. Reserve 15 minutes for yourself.

- Exercise first, diet second. You can't exercise effectively if you're on a crash diet. The simple act of exercising more makes you want to eat a better diet. Don't go full steam ahead - start exercising and then make small changes to your diet.

- Lift heavy. Mark (Davina's personal trainer) told me I'd outgrown the weights in his home gym. I was doing upright rows with 15kg dumbbells! If you have smaller weights, do more reps until your muscles beg for mercy!