Experts share what actually happens in your body when you attempt a fasted cardio session without eating anything first.
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Working out on an empty stomach isnt always intentional.
Experts in This Article
New York City-based dietitian
What is fasted cardio?
New York City-based dietitian
And how long do it’s crucial that you have forgone food?
However, the best results typically come from working out after a 12-hour fast.
Most commonly: On an empty stomach first thing in the morning.
Having some caffeine can help to give you an energy boost to power through your workout, he says.
First off: Is fasted cardio safe?
As long as youre in sound health, you should be perfectly fine giving fasted cardio a try.
However, if you have a pre-existing medical condition, Gardner suggests talking to a healthcare professional.
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Once your glycogen stores are tapped out, the body turns to fat stores for fuel, he says.
You burn more fat.
It could increase your stamina
Fasted cardio may also support your endurance goals.
Not everyone can happily work out on an empty stomach.
Which could undermine any gains you might have otherwise made.
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