Start Slowly, Build Methodically
If you haven’t exercised in a while and are unsure of how to get started – try making a daily challenge to start moving your body in small ways and build to where you can handle longer, more strenuous exercise sessions. Climb stairs if given the choice between that and escalators or elevators. Walk your dog, chase your kids, toss balls with friends or mow the lawn. Anything that moves your limbs is not only a fitness tool, it's a stress buster.
Every little bit adds up and the important thing to focus on in the beginning is building the habit. I promise if you are consistent in doing the exercise you will see positive changes over time.
“The man who removes a mountain begins by carrying away small stones.” ~William Faulkner