Warm-up: Light stretching. Here is a new 5 minute stretching video. Only do what you are comfortable with. https://www.youtube.com/
*40 minute cardio. Walk outside or on treadmill, elliptical or bike (recumbent, upright or AirDyne). Easy pace. Commit to doing this workout 4 to 5 times a week.
*2rds, 15-air squats, 10-push-ups, 15-sit-ups. Modify as needed.
Air squats-find something to put under you bottom as a guide for how far to go down to. Make sure it is a comfortable depth, not too far down. https://www.youtube.com/
Push-ups-you can do them from your knees or even standing
against a wall. https://www.youtube.com/
Sit-ups- Feel free to do crunches. DO NOT place hands behind your head. That only puts undue pressure on your neck.