Here are 6 easy ways to recharge your personal batteries

Here are diet and lifestyle “hacks” from Dave Asprey to boost energy and brain power.

Throw a little cold water on your day. End your morning shower with a blast of cold water. Try to build up to a 30-second-long blast. “You’ll burn hundreds more calories all day long,” Asprey says, and “have more energy and sleep better.”

Fast with fat in the morning. Intermittent fasting (or not eating for the 16 hours between dinner and lunch) has delivered big payoffs in energy and focus for Asprey, but, he says, it’s easier to do without irritability when you have Bulletproof coffee to last you through lunch. While Asprey’s popular but controversial creation is made with grass-fed butter, his own “Brain Octane” oil, and special mold-free coffee beans, many make it with their own coffee and a medium-chain triglyceride (MCT) oil.

Get 20 minutes of sunshine in the a.m. Take your dog for a walk, tilt your face — without sunglasses — to the sky, and leave some of your skin unprotected to help your body create Vitamin D. Be smart about oil and sweeteners. Asprey cooks with monounsaturated fats such as avocado oil or grass-fed ghee. “You want to cook foods at a lower temperature and eat the right fats. It makes a huge difference in how the body performs.” Asprey advises limiting sugar and eliminating artificial sweeteners.

Exercise differently. Asprey advocates working out fewer times each week but upping the intensity to boost cellular function and energy output. In addition to daily walking or other movement, he performs two intense workouts a week for peak performance — one a weightlifting workout with heavy weights and another high-intensity interval training workout that mixes sprints of 60 to 90 seconds with a minute of rest.

Curb blue light to improve your day and night. Cover the blinking lights on your monitors, televisions and other electronic devices with electrical tape or stick-on covers. Set your phone to low light. Use a dimmer on lights in your living room and bathroom at least two hours before bed.