Have you ever had to stop a weight loss plan because it was getting too intense?

Yesterday I had a few hours of sleep deprivation as well as repeating dehydration at night, which I believe was caused by rapid weight loss, from the supplement I was taking, because the dehydration impaired my sleep, and the rapid weight loss, lowered my vitamin B levels, so that I needed supplementation to fall asleep.

Have you ever had to stop a weight loss plan because it was getting too intense?
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