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Straight answers on creatine, caffeine, coffee and training, backed by research.

Does Lifting Weights Burn Fat?

Lifting burns fat, including belly fat, but cardio burns more. Lifting's real advantage is keeping muscle while you lose fat. Here's how to combine them.

Is Protein Before or After Workout Better for Building Muscle?

Protein before or after a workout works about the same. Here's what the trial that tested it found, why the anabolic window is wider than you...

Is Sauna for Muscle Recovery Worth It?

A sauna after lifting may ease soreness and help you bounce back, but the research is small. Here's what it found and how to use a...

Can You Take Creatine Without Working Out?

Creatine still fills your muscles without exercise and may help strength and fatigue a little, but building muscle takes training. Here's what research shows.

Should You Work Out While Sore?

Usually yes, but go easier on the sore muscles or train something else. Here's what research says about soreness, recovery and when to rest.

How Many Reps and Sets to Build Muscle?

Most lifters build muscle well with 6 to 15 reps per set and around 10 or more hard sets per muscle each week. Here's what the...

How Long Should a Workout Be?

For most lifters, 45 to 75 minutes is plenty, and 30 focused minutes can still build muscle. Here's what you need per week and how to...

How Long Does It Take to Lose Muscle?

Three weeks off didn't cause significant muscle loss in studies, and what's lost after longer breaks comes back quickly. Here's the timeline and how muscle memory...

Does Creatine Increase Testosterone?

Creatine doesn't raise testosterone. Here's what every trial that measured it found, why one study's DHT result gets misread, and how creatine works instead.

Does Lifting Weights Stunt Growth?

Lifting weights doesn't stunt growth. A review of 22 youth studies found no effect on height, and injuries were rare. Here's how teens can lift safely.

How Do You Lose Fat and Gain Muscle at the Same Time?

You can lose fat and gain muscle at the same time. Here's what the best trial on it found, and the protein, training and calorie targets...

How Long Does It Take to Build Muscle?

Measurable muscle growth can start within 3 to 4 weeks of lifting, but visible change usually takes 2 months or more. Here's the timeline and what...