Science of HIIT

HIIT has remained in the top 5 worldwide fitness trends, as recorded by the American College of Sports Medicine, since entering at number 1 in 2014 (Science Focus, 2019).

HIIT videos on Youtube channels such as Popsugar Fitness (5.3 million subscribers), Joe Wicks' The Body Coach TV (2.59 million subs) and Pamela Reif (5.18 million subs) grew during the pandemic as people worked out at home (Youtube, 2020).

There was a 58% global increase in online articles about HIIT during the first lockdown (Metro, 2020)