The new secret of youth is called strength training. Good, easy and cheap. You can do this anywhere, anytime. No need for workout equipments or fitness center. Check it in the following video!
1. Basic squats. Squats, squats and more squats. No weight.
2. Planking. Rest your forearm against the floor and stay parallel to the floor in 20-second sessions.
3. Chair triceps. Sit with your hands on a chair and go down keeping your body firm. 10 reps. Easy right?