HIIT workout obsessives, have no fear ... Using weights to up the burn, follow Heather for a super-sweaty sculpting sesh. She's the Fiit trainer (and former Love Island star) you love and Gabby ...

IF YOU’RE LOOKING for a style of workout that will push you to your limits without needing to exercise for hours, you only need to understand one four-letter acronym: HIIT. The term stands for ...

Jumping out of bed and straight into a HIIT workout without food first could be a problem for performance and hormonal health. HIIT requires huge amounts of energy to get through powerful moves as ...