Illness or injury may often be the instigator, but frailty is what kills us, says Dr. Mehmet Oz, cardiothoracic surgeon, author, and host of The Dr. Oz Show. Our bodies can't recover as well if we're not strong, which is why he recommends a balanced workout plan that includes strength, cardio, and flexibility training.
This doesn't mean you need to spend hours in the gym each week. The busy doctor has no problem fitting in his seven-minute workout every morning (check out the full routine here), which he says is better for you than the occasional hour-long gym session. And you can say goodbye to boring treadmill sessions. Instead, Dr. Oz suggests getting a basic pedometer and setting a goal of 10,000 steps per day (that's about five miles) to stay slim and healthy.