Below is a copy and paste from an email from Greg Nochols. He is an exercise physiologist.
Intermittent fasting has been a hot topic for about 5 years now. While there are some people who rabidly promote IF as some miraculous diet “hack,” and some people who claim that eating less frequently will cause you to lose all your gainz, most people have gravitated toward the more reasonable middle-of-the-road position: IF is unlikely to help or hurt very much from a strictly physiological perspective, but it can be beneficial for some people if it helps with dietary enjoyment and adherence.
Recently, the first high-quality study on the most popular form of intermittent fasting (“Leangains-style” with an 8-hour feeding window each day) was finally published.
Here’s the short version: While intermittent fasting likely didn’t have a meaningful effect on strength or body composition, it may have some beneficial health effects.