What's on Virtual Health and Wellbeing HIIT (High-Intensity Interval Training) HiiT - this session is a full-body workout. It is high-intensity interval training which means you work as hard as you can for the allotted work time and then rest for the allotted rest time. It does not mean that each session is all high impact, each session can be adapted to suit all levels of ability and fitness level. We will do a pre-stretch, warm-up, the workout and then a cooldown stretch. Each workout consists of 4 rounds of 6 exercises and each work/rest interval lasts for 40secs /20secs or 45secs/15secs or 50secs/10secs. Each round will cover cardio (heart & lungs), arms, legs and abs.