Starting in your 30s, you might start losing muscle mass and strength.

But you have the potential of modifying them on so many levels, including with exercise and diet.

Moderate-intensityaerobic activitycan include brisk walking, dancing, and gardening.

She added that no matter how old you are, its never too late to start moving.

She said its all about finding an activity that you find interesting and will enjoy.

Its all about finding the one exercise you love, whether its Zumba orPilates, she added.

Resistance training can help maintain muscle mass, Rau said.

A proper warm-up should be performed before a workout to help reduce the risk of injury, Best said.

National Health Service.How to improve your strength and flexibility.