High-intensity training is one of the most powerful tools for improving performance. It can raise: VO₂ max Speed and power Lactate tolerance Ne...

It’s easy to assume that shorter workouts are easier to recover from. But when that shorter workout is made up of hard intervals, the recovery cost is ofte...

High-intensity workouts get most of the attention. But the real secret to making those sessions productive is the aerobic base underneath them. A stronger...

Some workouts leave you buzzing. Music loud. Heart racing. Sweat pouring. They feel productive because they’re exciting and intense. But feeling amped up...

Sports, skill training, and high-intensity group workouts can all elevate heart rate and feel demanding.  But relying only on these for your weekly training...

Combining strength and conditioning is powerful.   Done well together, research shows up to a 40% reduction in "all-cause" mortality. Combining ...

Not all training stresses the cardiovascular system in the same way. A long aerobic session and a heavy strength workout can both be “hard” — but they chal...

Not all training stresses the heart the same way.  Steady aerobic cardio, high-intensity intervals, strength training, and mixed modalities like sled pushes...

Many workouts leave you breathing hard, sweating, and feeling exhausted. Because of that, it’s easy to assume they must be improving your cardiovascular fi...

Circuit training is often labeled as “cardio.” Your heart rate stays high.  You’re breathing hard.  You’re sweating.  It feels similar to a conditioning wo...