Teased into resuming your outdoor workouts by our recent three-day run of temperatures in the 70s? Even though the temperature isn’t supposed to get much above 45 today, that doesn’t mean you have to revert to your troglodyte was of suffering through another session on your basement trainer, or sweating to the oldies with little Richard. You may have to keep your shorts and T-shirts in the closet, but observe a few easy rules of cold weather outdoor engagement and the outdoors can be your playground on all but the coldest of days. Which is a good place to start.