Looks like your mom may have had a good reason for telling you to sit up straight all those years. "Poor posture doesn't just make you look like you're tired, it can actually make you feel tired," says Phillips. If your body isn't properly aligned, she explains, you can put excess strain on your back and hips, which means your body has to work harder and you end up feeling more tired. A slumped-over position also lowers mood -- and self-esteem, which won't exactly put pep back in your step.

To avoid that mid-afternoon slump in both posture and energy levels, make a conscious effort to check your posture whether you're sitting or standing. "Your shoulders should be back with your blades almost touching -- as close to touching as you can get them," advises Phillips. You should also be mindful of having your head jut too far forward or back.

If you're having trouble focusing but fear you might have to take a trip to the ER if you down another energy drink, a simple stretch might help. "Any position that puts your head below your waist increases blood flow to your brain and makes you more alert," says Phillips. "So even something as simple as standing up and touching your toes for 10 seconds can help improve your alertness." Desk-bound workers might appreciate the fact that they can pull off this move while sitting down.

Forget waking up and smelling the roses. If you want to kick start your day, Phillips suggests getting a whiff of peppermint, rosemary or jasmine, which have all been shown to increase alertness.

For an easy way to incorporate this energy-enhancing aromatherapy into your life, she recommends using products with notes of the stimulating scents during your morning shower. Try lathering up with Juara Tiare Jasmine Tea Bath & Shower Gel and then moisturizing with an invigorating peppermint moisturizer, like Bath & Body Works Triple Moisture Body Cream Twisted Peppermint cream.

Avoid common bedtime blunders that have a negative effect on the quality of your sleep. Many of us are glued to our cell phones, tablets, laptops or televisions up until it's lights out, but the artificial light that these devices emit, called blue light, can make it harder for us to nod off. "Our brain has normal circadian cycles and when it's time for us to go to sleep, melatonin is released, which helps us feel calm and a little bit drowsy," says Phillips. "Artificial or blue light delays the release of the appropriate amount of melatonin, so it can make it harder to fall asleep." She recommends shutting off all devices an hour before going to bed and keeping them in another room if they remain lit up while charging.

Likewise, light creeping into the bedroom from street lamps can also disrupt circadian rhythms. Consider investing in a product like the Sound Asleep Blackout Window Curtain Liner to create a pitch black sleeping environment.

Finally, try replacing your nighttime ritual of catching up on your Instagram feed with taking a warm bath (after all, you're going to need something to do in the hour you take a break from your devices before bedtime). When your body prepares for sleep, its temperature drops. "Once you step out of your warm bath, the sudden drop in body temperature kind of mimics the natural drop in body temperature that you have when you fall asleep, so that's a good way to unwind," says Phillips.