蜜芽传媒

You might have seen it online - social media influencers sharing their morning routines before work. Some start as early as 4 or 5 AM, turning those hours into their personal 5-to-9 before the traditional 9-to-5 grind.

Michelle Obama, Bob Iger, and Apple CEO Tim Cook all claim to be up between 4 and 5 AM.

There鈥檚 a 鈥�5 AM club鈥�, inspired by the habits of very successful people. But does waking up that early actually make us better at work?

And there鈥檚 even a whole industry of how to optimise your morning routine with supplements, journals and beauty products. In some cases, ice baths.

Against his better judgement, Business Daily's Matt Lines signed himself up to a week of 4 AM starts and met those for whom this is a way of life.

If you'd like to get in touch with the programme, our email address is businessdaily@bbc.co.uk

Presented and produced by Matt Lines

(Image: Matt Lines braving an ice bath as part of his research)