So, you think you know what works best for your biceps, huh? Why did you hire someone again? In other words, if your trainer suggests a new exercise or routine, don’t immediately dismiss it—give it a go. “You need to trust that your trainer has your best interests in mind,” says Holland. “While you want to be honest, avoid trying to control the workout. Your way isn’t the only way.” Now, let’s say your trainer feels you’d benefit from supersetting dumbbell chest presses with chest flies and you hate them. Strike a compromise by asking if you can bang them out at the beginning of your session so they’re out of the way, Holland suggests.