Participants will attend two sessions per week for the 6 week intervention. Each session will consist of 6-10 sets of 60 second high intensity intervals interspersed with 60 seconds recovery. The workload during each interval will be set at 80-90% of peak power achieved during the VO2peak test. This is predicted to elicit 85-95% heart rate reserve in the participants. After each interval the participant's heart rate and rate of perceived exertion (RPE) will be collected. After each session a researcher will complete an Adverse Event form to record if an event occurred or not. Additionally the participant will complete a physical activity enjoyment (Perceived activity enjoyment scale) after one session per week.