1) Feel low level pain for 10 seconds, and after feel low level pleasure for 10 minutes. (Think stubbing your toe level pain and getting a compliment from someone you find attractive level pleasure)

2) Feel medium level pain for 10 seconds, and after feel medium level pleasure for 20 minutes. (Think burning your fingers on a baking tray fresh out the oven level pain and having amazing sex level pleasure)

3) Feel excruciating pain for 10 seconds, and after feel euphoric level pleasure for 30 minutes. (Think being burned alive level pain and a shot of pure heroin running through your veins level pleasure)

Notes:

There are no side effects, this is all happening mentally, you will not actually receive physical or psychological damage after. AKA you won’t be addicted to the pleasure (or pain), you won’t continue to feel the pain, you will be returned to where you were before the experience, but retaining all the memories from the two experiences.