What are the main categories of chronotype? Chronotypes are often simplified into ‘morning larks’ (early birds) and ‘night owls’ (evening types).

“Morning people, or early risers, are people who find that their energy levels are optimal first thing in the morning and often find that they are more productive during the first part of the day,” says Quinn.

“Whereas, a night owl, or someone who is more of a night person, would be someone whose energy levels are optimal later in the day or the evening.

These are people who like to stay up late.” What are some benefits of trying to sync exercise with your chronotype? “The main benefit is that it can help you stay consistent with your exercise,” says Quinn.

“We’ve all got busy lives, and everyone’s got different preferences, but the best programme is going to be the one that you’re going to be able to stick to.

“For example, if you set a workout programme where you have to go to the gym at eight o’clock in the morning, and you’re a night person, you might fail before you’ve even started.

“However, if you select a time which is more suited to your preferred time of day and your body clock, where you feel more energised and it works better for your schedule, you’re going to be much more consistent and much more likely to achieve your goals, whether that’s improving your mental health, an aesthetic goal, or a performance-related goal.” Are there any signs that might indicate someone is working out at the ‘wrong’ time of day? “The main physical signs to look out for are to do with energy levels and performance,” says Quinn.

“For example, someone’s output might be affected.

They might be struggling to train that day, are not turning up consistently, and are struggling to hit their designated reps or loads, therefore might not be able to accomplish their physical goals in the gym.

Sometimes, people look visibly deflated.

Their energy levels are depleted, they’re looking lethargic, and might not be engaging with conversation.

If someone is feeling lethargic and tired, they’re not....