Much has been written on the subject of when is the best time to exercise. Every fitness guru seems to have their own view as to the optimal time of day to get moving and burn the highest number of calories.

Some gyms are open 24 hours a day, and most open at 6am and stay open until 9 at night, allowing you to fit your exercise routine into your busy schedule. So does it really matter what time you choose to get fit?

According to a study in Medicine and Science in Sports and Exercise, a group of men were found to show highest muscular function in the evening, but only in the exercises with the fastest actions. However, many people who exercise on a regular basis work out earlier in the day.

The most important point to consider is if you're an owl or a lark, and tailor your exercise routine accordingly.

Early birds will find you have more energy earlier in the day - you'll be the one watching the sun rise, hours before everyone else gets up. Larks tend to wind down in the early evening and will be ready for bed before 10pm. If you bounce out of bed, use this spring in your step by getting out for a run or to the gym while it's still relatively empty.

By contrast, owls will struggle to open their eyes and rely on strong coffee to get them through the early hours. You're the life and soul of the party once darkness falls, so try an demanding spin class or swim after work.

If you tap in to the time of day when you're at your most energetic, motivation comes naturally!