Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a ...

A typical SIT workout begins with a five-minute light cardio warmup to condition muscles for activity, followed by a maximum ...

Imagine a workout that burns fat and potently boosts your speed and agility. Sprint interval training (SIT) is a workout ...

Sprint workouts torch belly fat, boost metabolism, and improve insulin sensitivity for faster results. Learn how to do them ...