SIT may sound laid-back, but it’s anything but. Short for sprint interval training, it’s a form of high-intensity exercise that has nothing to do with taking a breather. Running is the obvious choice ...

On TikTok, workout tips abound — some credible, some dubious. And recently, you may have been hearing about something called sprint training, which falls somewhere between 12-3-20 treadmill workouts ...

Physical activities like jogging, walking, cycling, and sprinting are activities known to engage the musculoskeletal system and result in the utilization of energy. Sprint interval training (SIT) is a ...