Brit Formula One star Lewis Hamilton has revealed that despite being an athlete there are days when training is a struggle for him. 

In a lengthy Instagram post on Monday, the six-time world champion wrote to his 21.9 million followers: “I’ve always been that skinny dude. Partly because of my job but mostly due to misguidance on diet, training, lack of certain workouts and bad sleep. Training is a struggle for me, it always has been. There are days when I just don’t have the motivation, days I hate my body, days where I feel fat or too skinny. My weight fluctuates a lot, up and down 2-3kg weekly depending on sleep, water and training.”