Jogging is an exercise fad that hasn’t faded away since it first became popular four decades ago. Jogging remains one of the most effective and simple ways to get your heart stronger. According to one calorie-burning-by-activity calculator, a 140-pound person who jogs for 25 minutes will burn almost 200 calories. Don’t just jump out of your car and start jogging; make sure to do a warmup with some active stretching for at least 5 minutes. To challenge your heart, you may be better off implementing interval training, allowing the heart rate to spike up to the upper reaches of your target heart rate for a couple minutes and then leveling off for a recovery period. If you’re running on hard surfaces like asphalt, splurge for some thick-soled spring-loaded shoes and replace them at least a few times a year. Get massages and roll on a foam roller to keep your muscles loose.