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Cardio sports (tennis/padel) while fasting

For a few weeks I have been IF’ing to lose weight and become healthier in a sustainable way. Currently:

Questions I have:

  1. Is it smart to do cardio padel/tennis during my fast in the morning? Or is it better to break the fast with some carbs upfront (eg fruit/oatmeal).
    Read some contradicting articles on this, where one said that when exercising above fat burning heart rates your body breaks down muscle tissue and does not draw from fat storage. Other articles said it is good to work out during the fast if you do not feel weak (which is the case). Since I’m plateauing a bit while I’m sure I burn much more calories than my intake, having some doubts lately.

  2. Other suggestions to improve metabolism/plateauing that I may have missed.

  3. Or other changes you would make to my schedule?

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Answer

Here’s my two cents, the body is a big complex system. There’s basically no switches that get biologically flipped to just on and off, it’s all trends and margins. You can drive yourself a bit batty trying to optimize the 5% when the 95% is just eating better and moving more.

When to work out? When you have the energy for it and it fits into your schedule. Concerned about muscle loss, eat enough protein. Plateauing, add 100 calories to your deficit every week until you’re happy with progress again.

>I’m plateauing a bit while I’m sure I burn much more calories than my intake, having some doubts lately.

One thing to watch out for is that the body is incredibly efficient. The calories we burn exercising are almost always less than what gets estimated.

Answer

I have to run on an empty stomach or else I feel sick, regardless if I ate 2 hrs before, I just can’t do it. My friend on the other hand has timed himself to eat breakfast as early as 5:30am so he can workout by 7:30am, He wants to bulk, I want cardio. I guess it’s a matter of what your goals are.

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