In mode clap clap asymmetry

I got it from a factory-type hospital, but in the past, I got it from another place and paid for 5 minutes of FX heart balls. I took the right side first for 2 minutes and 30 seconds, and then  the left side for 2 minutes and 30 seconds. (I did it on the left side, then the right side.. I wonder if someone else got it like this?) It was so hot when I took the last left side. If anyone knows if the effect gets stronger the hotter it is, please let me know ㅠㅠㅠ Only the left side seems to work better ㅠㅠ