If you have neglected your fitness for a while, you may feel reluctant to get back into the routine. This may be especially true if you previously enjoyed more vigorous exercises and know that those activities would be much more difficult now. However, you can also ease back into a fitness routine with less intense exercise. In fact, it could be healthier to do so instead of jumping back into exercise that might be too heavy for you to handle safely.
Burning 100 calories a day is a great starting point, and it won't take too long to achieve even with moderate exercise. For example, you can burn 100 calories or more just walking for 30 minutes at a moderate pace of three miles per hour. Walking faster will burn more calories in the same amount of time. Furthermore, for a single distance, disregarding time, walking will burn more calories than running.
Once you are back in the habit of exercising, you can give your routine a boost with activities that are a bit more vigorous. Swimming and bicycle riding are two choices here. Swimming leisurely can burn 100 calories in a mere 15 minutes. If you prefer to ride your bike instead, you can enjoy a relaxing, leisurely ride for 25 minutes knowing that you will burn about 100 calories.
If you are satisfied with your fitness progress using low- and moderate-intensity exercise, you shouldn't feel pressured to pursue more vigorous activities. However, if you feel invigorated by your new routine and want to get even more fit, you can burn your 100 calories in a very small amount of time through jogging or running. Jogging at an average pace for 15 minutes will result in 100 calories burned. By contrast, a full-on run will burn through 100 calories in six short minutes.