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If you train in a commercial gym, you've probably noticed most gym go-ers don't train their legs. You might be the only one using the Power Rack for Squats and maybe you've seen guys with a huge upper-body but toothpick legs.

Popular excuses: "I run for my legs", "My legs are too big already", "Squats hurt my knees", ... Whatever the story, not training your legs is the biggest training mistake you can make. Here are 5 reasons you should train them.

1. More Muscle. You can find studies showing that Squats & Deadlifts increase the release of Growth Hormone & Testosterone more than any other exercise. These are natural muscle building hormones.

2. Bigger Upper-body. Squats & Deadlifts work your whole body, not just your legs. Quick examples of how they stimulate upper-body growth too:

Your arms squeeze the bar hard during heavy Squats & Deadlifts.

Your abs work hard at stabilizing the weight during Squats.

Your chest muscles tense hard during heavy Deadlifts.

If you can't train your upper-body because of an injury, you can prevent muscle loss in your upper-body by doing heavy Squats & Deadlifts.

3. More Strength. Stronger legs and core muscles will increase your strength on upper-body lifts and thus help upper-body muscle development. Quick examples of how Squats & Deadlifts can cause strength gains on your other lifts:

Leg drive matters on the Bench Press. Stronger legs means more leg drive and a bigger bench, and thus bigger muscles.

Squats & Deadlifts strengthen your legs & lower back. These muscles help you stay strong during the Overhead Press.

4. Symmetry. I know I'm preaching all the time you shouldn't care about what other people think, but a big upper-body with toothpick legs looks ridiculous. And it shows a lack of ...

5. ... Mental Strength. Here's the real reason why people don't train their legs: it's physically & mentally hard. That's why doing Squats and Deadlifts will build your mental endurance & character like no other exercise.

Running Doesn't Count! Running, cycling or soccer will never work your legs like Squats & Deadlifts do. Include both exercises in your routine and you'll see how you'll get better at sports and how your upper-body will improve.

Don't know how to include both exercises? Check StrongLifts 5×5, it only takes 3x45mins per week. Make sure you read the success stories too.

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5 Reasons Why You Should Train Your Legs | StrongLifts

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If you train in a commercial gym, you've probably noticed most gym go-ers don't train their legs. You might be the only one using the Power Rack for Squats and maybe you've seen guys with a huge upper-body but toothpick legs.