Visualise your movement

Picture your muscles contracting and expanding. British researchers found that those who focused on their biceps while doing biceps curls had significantly more muscle activity than those who thought about other things.

Use motivating mottos

Chant positive words such as ‘I am powerful, strong and focused’. You’ll almost certainly feel daft at first, but sports psychologists at the University of Southern California found that both instructional and positive self-talk can enhance strength, accuracy and co-ordination.

Think about appearances

When lactic acid is setting in and your muscles are in pain, focus on how you’ll look to any ladies watching if you crumple under the strain. A study from the University of Bath found that the fear of looking unattractive can be a strong motivation to keep lifting the weights.

Have a handful of raisins

For an instant energy boost, keep a few raisins in your pocket. A study in the Journal Of Strength And Conditioning Research found that they are an effective source of carbohydrates that also provide cramp-busting potassium as well as protein, iron and fibre. Just don't have them loose or you'll look a bit silly as they all fall out when you lay on the bench.