Hello , is it necessary to do warm-up exercise ? I can't wait to dive into the water .   I'm sorry . Every customer coming here must do the warm-up exercise before getting down to swimming . That's out regulation .   Yeah , I see . You are just doing your job . But I wanna know what the advantages it has .   OK , lovely boy . Try to be patient . Do you know the danger of swimming without warm-up ?   As far as I know , people will be weak if they swim too long .   That's right . But the most dangerous thing is that their legs may spasm out of control when swimming .   Is it very dangerous ? I'm a little scared . Do you offer the lifebuoy for us ?   Yes , besides that , we also provide our customers with goggles , swimming suit and something like that .   Do you have the workers to save me if anything should happen ?   Of course , all the workers here are able to swim , and they will come to your aid quickly . 