The awkward unease was palpable in the aerobics studio of a local fitness club today when Brock Lesnar and the Undertaker — fierce rivals in World Wrestling Entertainment (WWE) — arrived for the same Zumba class.

“Oh,” said The Undertaker, fidgeting nervously with his Lululemon leggings before the class began, “hey.”

Lesnar, who conquered The Undertaker’s legendary WrestleMania streak in 2014, cast his eyes to the floor and muttered a bashful  “Hi.”

The men then moved to opposite sides of the studio to begin the class — which helped them tighten their tummies and firm-up their booties in preparation for their much-anticipated upcoming SummerSlam showdown — to a soundtrack of Latin samba rhythms.

Though the men tried to remain on their best behavior, tempers flared during the “salsa squat-lunges” and the two men charged at one another with fists flying, but they were pulled apart by a dozen of their female classmates.

Things got especially awkward when both men, sweat-drenched and exhausted in the locker room after class, inadvertently climbed into the same hot tub.