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. Sprint interval ...

Whether you ascribe to polarized training, pyramidal training, or sweet-spot training, ultimately all different training philosophies come down to mixing up easy training with hard training in various ...

As women enter their 40s and beyond, hormonal changes can make it harder to build muscle, maintain energy, and manage body composition. High-intensity training is one of the most powerful tools for ...

If you’re looking for a way to boost your athletic performance, calorie burn, and fitness level, you may want to consider sprint interval training (SIT). Similar to high intensity interval training ...

High intensity interval training (HIIT) can offer significant health benefits to people with weight loss goals by burning more calories, reducing body fat, and improving general well-being. HIIT can ...

High-intensity interval training (HIIT) is as popular as ever. Join the trend with these tips on what to wear, how to warm up, and more. No doubt you’ve heard the buzz about high-intensity interval ...

The benefits of HIIT include burning calories, losing weight, and building muscle. HIIT can also help you lower blood pressure and blood sugar, while improving oxygen and blood flow. HIIT may also ...