What happens to your body when you fast for 24 hours

This post is about longer fasting periods – 24 hours or more – and how to do them.

I arbitrarily divide it at 24 hours but there is no physiologic reason to do so, other than for classification purposes.

There is no magic dividing line ad many consider 36 hours the cut-off for longer-term fasts.

We covered fasting regimens using periods less than 24 hours previously. The longer regimens are generally done less frequently. The major determinant of which fasting regimen is right for you is a personal preference.

Some people find longer fasts easier and some find them harder.

Most people find that hunger increases into day 2.

Fasting 2 days a week results

Fasting 2 days a week results

How long should you fast for weight loss

Benefits of 24-hour fast once a week

Prolonged fasting benefits

Long-term fasting stages

At that point, hunger peaks and then gradually recedes. This is important knowledge if you are attempting a longer fast (3-7 days). It is easier to continue knowing that hunger usually gets better.