When it comes to fast and effective sessions, intervals continue to reign supreme. Read More>>

This new body-weight-only interval training class pushes your body work hard while also relieving some of the stress the workout is putting on it. Read More>>

The city's newest boutique fitness spot, on the Upper East Side, has a laser focus on high intensity interval classes. Check out our photos (and popping muscles).Read More>>

Classes at The Fhitting Room, scheduled to open in mid-December on the Upper East Side, are all interval-based and under an hour. Read More>>

New research outlines a running routine proven to shave minutes off your race time and cut training in half. Read More>>

News from our friends around the web—body acceptance, interval training redefined, myths about carbs, and more. Read More>>

A handful of tough fitness boot camps now include yoga, Buddhism, and even meditation along with your push-ups and planks. Meet three leaders of the new regime. Read More>>

Dropping a dress size can cost time and money. Trainers like Tracy Anderson charge $900 a month and demand you log seven to ten hours a week at her studio. But busy New Yorkers need maximum results in...Read More>>