But it wasn't enough to strengthen her heart.

Could it be that he actually strengthened his heart because of his passionate involvement in the game?

Is a sixty-year-old too old to walk three miles a day to strengthen his heart?

Regular exercise (at least 30 minutes most days) can also help lower blood pressure and strengthen your heart.

The course has two steady inclines designed to strengthen your horses' heart, lungs and muscles.

I have been giving it to your father, domna, to strengthen his heart.

He's lost so much blood, she's worried she'll have to strengthen his heart again.

Strengthens your heart and helps control your blood pressure.

Running seems to strengthen your heart, as well as other muscles, and lower cholesterol.

Of course, you don't need to join a club to shed winter flab and strengthen your heart.