• I'm a Trainer, and This Is the Exercise You Should Be Doing For Stronger Lower-Back Muscles

    6 days ago - By PopSugar

    If you spend enough time around a trainer, you'll probably hear the term mirror muscles come up. It's not a new group of muscles scientists just discovered, it's a term used for people who tend to only train the muscles they can see in the mirror. Before we go any further, I want you to imagine the person in the gym doing their workout where the free weights and mirror are. They're probably doing exercises like the bicep curl and shoulder press - all muscles you can see in the mirror.
    There's nothing wrong with these exercises and training those specific muscles, but it's important to...
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