Trainers say circuit training is the most efficient type of workout you can do (plus: 3 example workouts)

It combines strength and cardio into one total body sweat session.

What's a Better Short Workout — Cardio or Strength Training? A Trainer Reveals the Answer

A trainer offers a tip for whether you should opt for cardio or strength training when you only have five minutes to spare.

Trainers Rank 9 Workouts That Burn Maximum Calories In Minimum Time

Plus, exactly how to get results from whatever activity you love to do.
Self

Do I Get a ‘Better’ Cardio Workout If I Go Faster or Longer?

If you want to boost your cardio fitness, you’ve got two ways to level up your workouts: push harder or faster, or keep at it for longer. Each option comes with its own challenges. The first can ...

At 68, Denise Austin Demonstrates 3 Cardio Moves to ‘Boost Your Energy’

No treadmill required.
Health

Strength Training vs. Cardio: Which Is More Effective for Your Heart, Muscles, and Longevity?

A combination of cardio and strength training is crucial for heart health, muscle strength, and healthy aging.

What’s Soft Cardio? Experts Explain Everyone’s Latest Fitness Obsession

Is soft cardio the missing piece of your workout routine? We spoke to a sports medicine physician and a pro trainer to find out.
The Daily Dot

Yes, the 12-3-30 fitness routine is still hard—and still going viral

What is the 12-3-30 fitness routine? "The most goated cardio formula" @brazaussie dubbed the 12-3-30, “the most goated cardio formula,” in a post from June 9 that has 563 thousand views. “Whoever came ...