So, what does it all mean? A sleep expert offers her thoughts

Dr Nerina Ramlakhan, sleep expert and professional physiologist, says: “It’s great that you prioritise your sleep, especially as you’re very active and training for the London Marathon in October. I also love your early morning routine and your awareness that, as an introvert, this is what you need to replenish your batteries – it’s not always about getting more hours of sleep.

“As someone who ran seven sub-four-hour marathons in their forties, I want to help you get as much out of your training as possible. So, can you manage to eat a small, balanced breakfast in the mornings before your training – even half a piece of toast with nut butter – and just one of the black coffees? Those two black coffees could really dehydrate you before your training session. You can then have your usual post-training breakfast.

“I’d like to reassure you about the amount of sleep you’re getting before you train or race and would advise you not to get too hung up on whether or not you’re actually sleeping but rather focus on resting if you feel like you can’t sleep. Doing some box breathing could help you to rest if you’re feeling restless. Are you taking any magnesium supplements or doing Epsom Salt baths? This will really help to replenish and relax your muscles especially when you start upping your mileage.”

“How can I optimise my sleep while training for a marathon?” A sleep expert answers your questions