Eat her out

You like eating pussy and if you're busy doing that, you can't see her looking at you like you're something she just stepped in.

"I'm going to eat your pussy until you cum."

"Good," Gwyneth says as she lies down and looks up at you contemptuously. She spreads her long legs. "But since this is a workout, no just lying flat on your stomach. If I tell you to do a push-up, do a push-up. If I tell you to plank while you lick, you plank. Got it?"

Once you start licking, you can claim you were focusing on pleasing her so you can skip her stupid orders. But this is a workout, maybe you should listen to your trainer.