This 7-minute workout from Lucy Wyndham-Read has over 79 million views. WH Digital Fitness Writer, Morgan Fargo, tries it to see what all the hype's about.

Lucy's 10-minute bodyweight cardio workout. Do: Set a timer and complete each move – in order – for 60-seconds. When you reach the end, start again for one more round. That's your workout done! 1.