Gradually increasing your exercise duration, intensity, or number of sessions can give your routine a boost. You’ll experience an improvement in endurance, energy, and stress management. Some ideas:

• Duration. 30 minutes is a reasonable and achievable goal. If you’re feeling great when your time is up, why not keep going? The extra activity will help you continue to improve overall fitness and well-being.

• Intensity. Low-intensity exercise (such as gardening, yard work, golf, bowling, or dancing) is good for your body — not every exercise session needs to be high energy. You can opt for 1 or 2 higher-intensity workouts each week (such as a 3-mile hike, biking, or laps in the pool) or try interval training (alternating periods of low-intensity with high-intensity activities, such as easy walking-brisk walking-easy walking).

• Number of sessions. Enhance your fitness by adding a second daily exercise session. If you’re already active in the morning, try going for a 15-minute walk at lunch or working out again after dinner.