Fasting guidance

Fasted shows a typical fasting timeline by hours fasted. Bodies vary: the app tracks time, not what is happening inside you.

Before you start

Check with a clinician before prolonged fasting, or if you are pregnant, breastfeeding, have an eating-disorder history, diabetes or kidney disease, or take medicines affected by fasting.

While you fast

• Finish whenever it feels right. There is no need to push through feeling unwell.
• Seek urgent help for severe symptoms such as fainting, confusion, chest pain or trouble breathing.

Further reading

Intermittent fasting: what is it, and how does it work? (Johns Hopkins Medicine)