Why should every weekend outing end in the same way – headaches, memory loss and dehydration. What if we told you there was a bar you could go to that you would leave feeling better about yourself than when you entered. Welcome to the world’s first underwater oxygen bar – no more hangovers! Carnival’s Puerta Maya port in Cozumel, Mexico, is home to this gorgeous underwater lounge, a freestanding 13,000 gallon tank of water. The giant pool boasts oxygen-infused fruit smoothies, which you can enjoy while playing Jenga or trying your hand at underwater target practice with high-powered bubble guns. Guests are given specially designed clear diving helmets to enter the pool, which give out an ‘invigorating’ mixture of oxygen and an aromatherapy scent of their choice. There’s even an underwater photo booth, message board and props and games to while away your time in the “bar”.