Before swimming pools, humans unsuccessfully tried to beat the heat by wearing fast-melting snowman suits, performing complicated rain dances, and punching humid breezes with their bare hands. Take shelter in the cooling confines of modern innovation with today’s Groupon: for $8, you get two all-day pool passes to The Funplex in East Hanover (a $16 value). The pool is only open Saturdays and Sundays from 10 a.m. to 5 p.m. This Groupon expires September 5.

Beyond its roaring arcade and indoor amusement center, The Funplex’s entertainment emporium quenches patrons’ thirst for fun with a newly opened swimming pool. Children safely splash in the roped-off kids’ area, kept in check by the watchful eye of the ever-stalwart lifeguard and the high-tech vigilance of the deep end’s force field. The in-ground mini lake eases heat-wave woes with the cool comfort of The Funplex’s clean and well-kept aquatic playground. As families frolic in the soothing crystalline current, swimmers can perfect their butterfly strokes, dog paddles, and cat flailings. Armed with a two-day pass, pool-goers can splish and splash on two consecutive days or use one pass immediately and save the other for their next underwater tea time.