Learn
Straight answers on creatine, caffeine, coffee and training, backed by research.
Should You Do Cardio Before or After Weights?
Lift first if strength is your priority. For muscle size, fat loss and fitness, the order barely matters. Here's what the research shows.
Is Creatine Vegan?
Most creatine monohydrate is made from chemicals, not meat, so the powder is vegan. Plant-based lifters also start with lower stores and may gain more.
Does Creatine Raise Blood Pressure?
Controlled studies find creatine doesn't raise blood pressure, even at high doses. Caffeine can, a little. Here's how to tell them apart.
How Much Water Should I Drink With Creatine?
Each scoop needs enough liquid to dissolve, but creatine doesn't call for gallons of extra water. Here's how much to mix and how much to drink.
Is It Bad to Drink Coffee on an Empty Stomach?
For most people, coffee before breakfast is fine. Here's what it does to stomach acid, blood sugar and cortisol, and who should eat first.
Why Does Coffee Make Me Sleepy?
Coffee doesn't sedate you. The tiredness usually comes from withdrawal between cups, tolerance or caffeine-shortened sleep. Here's how to fix each one.
Does Coffee Stunt Your Growth?
There's no good evidence that coffee stunts growth. Here's where the idea came from, what the bone research shows, and how much caffeine teens can have.
Why Does Coffee Make You Poop?
Coffee wakes up your colon within minutes, about as strongly as a full meal, but only for about 1 in 3 people. Here's why, and how...
How Long Does Caffeine Withdrawal Last?
Caffeine withdrawal usually starts within a day, peaks in two and lasts 2 to 9 days. Here's the day-by-day timeline and how to make it easier.
Can You Put Creatine in Tea?
Hot tea dissolves creatine easily, and it's what the first creatine studies used. Here's how tea compares with coffee and how to mix it.
Does Coffee Raise Cortisol?
Caffeine raises cortisol, but daily coffee drinkers build a partial tolerance. Here's what the research shows and what it means for your morning cup.
Is Creatine for Runners Worth It?
Creatine won't make steady distance running faster, but it may help with surges, hills and sprint finishes. Here's what research shows for runners.