One of the most well-known exercises is the squat. The exercise comes in countless variations — think: back squat, front squat, sumo squat — and can be performed with a variety of workout equipment, ...

The fitness world is divided: On one side, you’ve got the purists who swear by barbells, dumbbells, and kettlebells. This crew is all about functional strength—workouts that mimic real-life movements ...

Quadricep exercises target the quadriceps - a group of muscles sitting on the front of your thighs. If you've done one too many squats in the gym or had to climb more stairs than you'd like, you'll be ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Ready for leg day?

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