There's a personal trainer in a pink tank top and black athletic shorts standing a gym with many dumbbells, barbells and basketballs behind her.  There are also some other gym equipment behind her.  She is talking about how to use the equipment.  The personal trainer is using an exercise bicycle and peddling the cycle very vigorously.  There a few other women who are also biking the stationary bikes.  Then the personal trainer begins exercising using a pair of dumbbells.  She also does some sit-ups as she holds the dumbbells in her hands.  She then goes back on the bike and peddles steadily.  Then she does some stomach crunches while laying on the ground.  Then she holds the two dumbbells in her hands as she does some forward lunges.  She continues on her exercise bike at a steady speed.