Table 1.

The characteristics of the most common forms of intermittent fasting.

Features	Intermittent Energy Restriction	Time-Restricted Fasting
Logic involved	Reduction compensatory metabolic responses	Circadian rhythms
Main principle of weight loss	The induction of energy intakes	The induction of energy intake time
Fasting period	A set of days, normally in a week	No more than 24 h
Intakes in fasting period	Strictly controlled energy intake	Only water or nothing
Common patterns	Twice-per-week fast, every-other-day fast (ADF)	16:8 diet, 15:9 diet