1.   I do aerobics twice a week.

2.   I was doing step aerobics, walking on the treadmill, swimming and using the fitness machines.

3.   She says she goes into training beforehand, taking extra vitamins, doing extra aerobics and eating right.

4.   Are you doing step aerobics tomorrow?

5.   His wife, Karina, once worked at a Ford dealership, but now does aerobics at a gym and tends their children.

6.   Instead of taking a one-hour afternoon nap, she does aerobics.

7.   Mornings, she spends doing water aerobics, running errands and playing with her grandchildren.

8.   Passers-by could see people doing aerobics, playing basketball and lifting weights.

9.   So all those people you see driving around with their fingers up their nostrils are doing nose aerobics.