The pushup is one of the most basic and effective upper-body exercises you can do.

But while it’s a fairly simple exercise, people often make a surprising number of mistakes when attempting pushups. These five tips will help you master the basics—and, in doing so, transform the standard pushup from a chest/shoulders/triceps move into a full-body exercise—which means more muscle, increased strength, and faster results.

Check out the ways you can build more muscle, and make your pushup workout more productive.

1. Brace your core

To avoid rounding your spine and doing “banana back” pushups, try squeezing or “bracing” your core. Imagine that you’re going to get punched in the belly. Naturally, you’ll flex to guard. Bracing reduces the risk of injury by enforcing a neutral spine and engages your core, making the pushup of a full-body exercise.

2. Squeeze your glutes

Your glutes are one of the biggest muscle groups in your body, and often the most inactive. By squeezing your glutes you will protect your lower back, improve posture, provide full-body tension, and help maintain a neutral spine.

3. Pack your elbows

A common tendency during pushups is to flare your elbows wide. Despite its prevalence, this mistake can lead to shoulder and rotator cuff issues. Instead, pack your elbows in toward your sides, trying to have less space between your armpits. “Stack” your joints at the start of each rep, with your hands under your elbows, and your elbows under your shoulders. This will improve long-term shoulder health, and recruit your triceps and lats more. Having joints in line also creates a better range of motion in the shoulders and chest.

Think of it this way: If you’re pushing open a door or pushing someone away from you, you’re not going to flare your arms wide—you’ll keep them close to your body. This works the same way.

4. Grip the floor

Instead of having your fingers together and pointing straight up, try this instead: Change your hand position so your thumbs are facing each other. Next open your fingers and grip the floor. This immediately creates more full-body tension, tightens the lats and triceps, and helps engage more upper-back muscles.

5. Push the ground away from you

Instead of pushing yourself off the ground, think of pushing the floor away from you. This force production translates into full-body tension, and creates a bracing effect throughout the whole body. By pushing the ground away from you, you’ll use more muscles, making the pushup more of a full-body exercise.