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Whether you realize it or not, your quads are doing the most—every time you sit, stand, step, or sprint. These powerhouse muscles on the front of your thighs are crucial for strength, balance, and ...

The longest bones in your body are your femurs, which are located within your upper legs. Connected to your femurs are your quadriceps, which are behind practically every movement that you do. This is ...

Simmons recommends the cyclist squat for building quad strength and hypertrophy. ‘It’s great for improving leg shape and ...

The quads are one of the largest muscle groups you can train, so working them increases your overall leg strength for exercises like squatting, lunging, leg pressing, and other lower body exercises ...

The core never gets enough credit for the work it does on the run. But without a stable center, you’d not only run with hunched-over posture, low back aches, or knee pain, but you’d also waste a ton ...

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?

Thigh strength exercises after 55, an 8-minute routine from a personal trainer to rebuild leg power and mobility without ...

Long-term lifters understand the real importance of leg day (despite how gruelling it may be). Stronger quads help to stabilise our body, power everyday movements, like walking, running and hiking, ...