Think running on a treadmill is the same as running outdoors?
Think again.
Experts say to go easy when transitioning to pounding the pavement outside after running on treadmills during the winter months. 
Pavement is a harder surface than the more forgiving treadmill belt, and that — along with running in cooler conditions than a climate-controlled gym or room — takes some time to get used to.
“The body generally takes about two weeks to acclimate,” exercise physiologist and running coach Tom Holland told the New York Daily News. ”Even people who are generally fit might do less over the winter.”
That means you shouldn’t log too many miles too soon, now that the temperatures are on the rise.
Obviously, running outdoors is more stimulating, given the changing scenery and other visuals that engage the senses.
“The mind is constantly seeking variety,” Gregory Chertok, a sports psychology consultant with the American College of Sports Medicine, to the newspaper. ”On a treadmill, flat is guaranteed but outdoors you have to watch for potholes, puddles and obstacles.”