Tingling down your arm, presser on your chest, and fantness witch that is how u now i u are aveing a heart attack so in that cass be carefull
There is many things she could do why'll playing tennis to get a better
benefit from the workout. For example before she plays take 3 laps
around the tennis court. Or why'll she is mid play she can run in place
to keep her heart rate up why'll waiting for the tennis ball to come
back to her.
Should stretch yout lower body some more