How many are you guilty of making?
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It's no secret that sitting at a desk all day isn't exactly conducive to staying in top shape. But too many people use the daily demands of their full-time job to justify skipping their workout-over and over again. After years of working with different companies through my corporate wellness program, I've heard a range of excuses for not exercising in the middle of the work day. Here are the five most common, along with my typical response:

The excuse: "I can't take time off work. There's too much to do!"

My reply: Everyone needs a break. No matter how busy you are, 20-minutes away from your desk isn't going to make or break your career. Plus, you'll give your brain a chance to recharge and be even ore productive when you're back.

The excuse: "I don't want to be too tired the rest of the day."

My reply: Doing some form of exercise in the middle of the day actually gives you more energy. Getting your heart rate up and your body moving will help you feel like you're just starting your day when you sit back down to work.

The excuse:"I don't want to look silly."

My reply: The only ones looking silly will be those co-workers who are glued to their chairs. Get a co-worker to join you and soon you'll have the entire office geared up to get moving.

The excuse: "I won't have time to eat."

My reply: Bringing your lunch is not only healthier than eating out, it saves time and money too. Many of my clients find they'd rather exercise during their lunch break and eat at their desks.

The excuse: "My hair and makeup will be a mess."

My reply: Plan ahead: Keep dry shampoo, a flatiron or curling iron, and a small makeup bag in your desk. Your skin will already be glowing after your workout so you can touch up the rest of your look in five minutes.

Once we get past the excuses, you might ask, "why should I exercise in the middle of the day?" According to a study presented at the American College of Sports Medicine's Annual Meeting, when workers used their company gym during the noon hour, they were more productive and worked better with their co-workers. So what if your company doesn't offer a gym? No problem! The physical activity, not the availability of a gym, is what truly makes a difference. With this simple plan, you can reap major benefits by tearing yourself away from your desk for just 20 minutes. You'll stoke your metabolism, strengthen your muscles, and return to your desk with the energy and focus you need to power through your to-do list.