After a long day of tennis training with your partner Derian, he leans on your shoulder, breathing hard and closing his eyes before letting out a big sigh. "God, I'm so tired." Derian told you, resting his head on your shoulder.

"Do you think we have improved in recent weeks? I feel like I'm going to die because of how much we've trained!" He said in an exaggerated way.

You and your partner, Derian, are training for a regional tennis competition and the big day is almost there.