ALL ABOUT LIFTING WEIGHTS
Types of grips on barbell
There are 5 different types of grips that people use when lifting weights. Those grips include overhand grip, underhand grip, mixed grip, false grip, hook grip which will be explained below. Any grips you choose doesn't matter, as long as it's comfortable for you.

Overhand grip
The overhand grip is also known as the standard grip which is suitable to be used when performing any exercises.
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2 things that construct an overhand grip: (1) Palms facing up and (2) Thumb wrapped around bar

Underhand grip
The underhand grip is the opposite of the upper hand. This is great for bicep curls and also exercises such as bent-over rows.
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2 things that construct an underhand grip: (1) Palms face away from body (2) Thumb engaged, and wrapped around the bar

Mixed grip
The mixed grip is also known as the alternative grip. It's a combination of overhand and underhand grip, where it could help you lift more weight and is perfect for powerlifters.
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2 things that construct a mixed grip: (1) one hand grips the bar using the overhand technique, (2) the other hand grips the bar using the underhand technique

False grip
False grip is the same thing as overhand grip, but instead we don't use any thumbs here. This grip is good for overhead press exercise as it helps support the bar path.

Hook grip
Hook grip will help people who have a weaker grip strength to help them lift more weights. However, this grip might be painful to some of us. This is the same as overhand except, the thumb is placed underneath the rest of the fingers to secure the grip.