Tips for Safely Increasing the Difficulty of Your Workouts

In order to make progress in an exercise program, you need to smartly push yourself out of your comfort zone. If your exercise routine is always comfortable, it’s likely not challenging you. Walking the same route through the neighborhood or performing the same strength-training program week after week will eventually lose its impact.
On the positive side, exercise becoming easier means you’ve progressed in your level of fitness. For example, your heart rate won’t get as high as you climb those hills, and the weights will start to feel lighter and lighter.