My energy is going way up again as I've got back into my routine of running 3 miles per day instead of 2 when I am at the gym. I've also incorporated a lot more weight training and I have been feeling really good physically. I don't feel sluggish or fatigued and I have plenty of energy to get me through my day. With that being said, I was curious to just how exercise boosts ones energy level and came across this tidbit:
One reason for the increase is that aerobic exercise makes your heart stronger and more efficient: A fit cardiovascular system delivers about 25 percent more oxygen per minute at rest and 50 percent more oxygen during physical exertion than an unfit one does. And stronger muscles give you the endurance to get yourself through the day with energy to spare. Exercise can also improve the quality of your sleep, so you feel more rested even after spending the same amount of time in bed. (Source: http://healthresources.caremark.com/topic/exfatigue)
I've also been going to the gym slightly earlier than usual and I wonder if that gets me more motivated. Whatever it is, exercise is definitely working and besides all of that, I've officially dropped 6lbs!
