3. Do fast-paced, high-intensity lifting.
“When you use weights at an extremely rapid pace, it will not only improve your strength, but also carry over to improve your endurance activity,” says Torres. “It’s one of the best ways to ignite your metabolism. When people do an excessive amount of endurance-only training, they actually slow down their metabolism because it starts to eat away at your muscle tissue.”
4. Choose compound movements over isolation.
Compound moves that require using more than one joint—like squats, step-ups, push-ups and pull-ups—will improve your endurance more so than exercises in isolation. “Isolated exercises like bicep curls and leg lifts aren’t going to stimulate you enough to increase your stamina,” he says.
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5. Remember: Routine is the enemy.
Switching up your workout is essential to building endurance and stamina. According to Torres, the human body gets used to a workout after two weeks. So if you’re always running, start doing Muay Thai instead. Or if you’re an avid cyclist, change it up by running stairs. “You need to move the muscles in a different way so that you don’t develop overuse. Plus, it becomes more motivating,” he says. “It’s important to keep the mind guessing.”