Does one have to be careful not to exercise too much as to avoid having a zero calorie balance?

[MediaHound]

This question was asked in our FAQ, as I have not been sleeved, I am turning to the community for an answer that I will put in the FAQ:

If one is only taking in 600 to 800 calories, does one have to be careful not to exercise too much as to avoid having a zero calorie balance?

[MediaHound]

Looking for help to put a quality answer in our FAQ, as a few are wondering about this topic. Thanks in advance for any help.