Woman reveals she's burning 3,500 calories every day and exercising a minimum of 20 hours a week
![Woman reveals she's burning 3,500 calories every day and exercising a minimum of 20 hours a week](https://i.dailymail.co.uk/1s/2021/04/01/15/41226188-0-image-a-37_1617286493635.jpg)
Lucy Charles-Barclay, 27, who lives in Chingford, Essex, wants to complete the challenge, which involved swimming 2.4 miles, cycling 112 miles and running a marathon in under 8 hours.