It's another week of looming deadlines and the calendar's chock full of to-do items, which means getting to the gym might not be high on the priority list for yet another seven days. If you want to stay in shape, you do have some options outside of the usual gym circuit. A few tweaks to your morning routine, and modifying your daily activities ever so slightly, might just be all you need to keep that metabolism revved up and keep you in shape.

Start things off with a power walk in the early morning. As soon as you get up, throw on your workout gear and head outside for a brisk 15 to 20 minute walk around the block. This will get your blood circulation going and help you enjoy some fresh air before your all-day-indoors agenda the rest of the day. Walking is a great aerobic activity that will keep your heart strong, and give your total body a much-needed workout. Don't forget to stretch before and after the session to avoid injury and pain.

Your next get-fit opportunity rolls around at lunch hour. Instead of brown-bagging it in the company cafeteria, you can eat your lunch on a picnic table outside, then take a brief walk around the building or up and down some of the large hallways around the office. Anything physical will do; climb up a few sets of stairs, give your calf muscles a good stretch outside, and just re-energize your muscles after those back-to-back meetings.

When you finally make it back home, get into the habit of doing a brief 10 to 20 minute yoga routine to elongate and flex all of those muscles that didn't experience the joy of movement as you hunched over your desk all day. Yoga and deep breathing exercises will let the oxygen flow throughout your body, and will help you feel lighter and limber. You can do these right before dinner to give your metabolism a boost before the meal ahead.

Getting and staying in shape doesn't require a commitment to the body-pump workouts at the gym, or even going to the fitness center. Plan your day around some simple exercises so you can keep your body in great shape whether you're hitting the gym, or not!

When the workday feels like a drag and hitting the gym after work feels like Mission Impossible, consider breaking up your day for a mid-day fitness circuit. A quick, high-intensity lunch time workout can give your metabolism a boost and help you log in that much needed gym time. If you have just 20 to 30 minutes to spare on your lunch break, consider jumping into any of these mini-workouts to keep up with your fitness resolutions this season:

Chair Squats
You won't even need to leave the office for this simple routine; just pull a chair away from your desk and do a series of squats by standing up and hovering over the chair base for 15-20 reps. Use a pair of water bottles as weights for extra resistance.

Speed Walking
Put on a pair of walking or running shoes and head outside for a brisk 20-minute walk. Head on over to your favorite smoothie place, coffee shop or just go on a window-shopping hike across town to log in those miles; just make sure your pace is fast enough to increase your heart rate.

Yoga Poses
An empty employee lounge or conference room is the perfect place to de-stress and stretch with a few yoga poses. Find a quiet space where you can center yourself and enjoy a few minutes of bliss; a few focused, intense stretches will get the blood circulation going and help you re-energize in the middle of an otherwise stressful day.

Wall Push-Ups
Another in-office maneuver, this exercise will tone up those biceps, shoulder muscles and upper back. Stand facing a wall about 2 feet away from the base. Push your palms against the wall and lean into the movement to do a standing push-up. Repeat for 15-20 reps or until you feel a burn.

The best time to do undertake the mini-workout is right before you dig into the lunch pack; you'll get to rev up your metabolism before noshing on that meal and may even burn it off faster. A brief, high-intensity workout will help build up endurance and stamina and keep you charged up for the rest of the day; follow the energy spike with a light brown bagged lunch for even more health benefits.