The certified fitness instructor and SI Swimsuit model shares an efficient workout that’s sure to make you feel the burn.

Join four-time SI Swimsuit model Katie Austin as she demonstrates a powerful and effective 18-minute workout that targets ...

How to do it: Stand with your feet hip-width apart. Slowly rise onto your toes and lower back down with control. Use a wall ...

One important one is alcohol. If it’s your habit to have even a glass or two on Friday and Saturday nights, this is one ...

John’s advice was to aim for “quality completion” – cruising through the movements smoothly, and only resting briefly during ...