This idea occured to my mind. I lock numerous slaves each month. Why not let them compete wtih each other in chastity. I decide to let my slaves in different locations to compete with each other. The slave who stays longer will win a BDSM gadget or video session with me! To make the game fair, I will choose slaves of similar age and similar experience level for the competition. Some idiot asked me this question, "Isn't that up to you-the keyholder to decide chastity training duration?" My reply was, " that's way too simple minded. For example, I let slave A and slave B compete the game. When slave B has physical problem like covid infection or ball blood circulation problem, his training has to be ceased so I have to unlock him when he honestly reports his physical problem with a video." Currently my beginner chastity slaves can stay in cage for a few hours to a few days. Mid levels can handle 1-9 weeks. Senior levels can endure themselves in the device for 3 months to 1 year. 75% of my slaves can double their previous record in chastity at/before the 3rd time. They begged me so hard a lot of times during the whole locking process but when I am so determined to activate their great potential, I will definitely push them further with strict control. My slaves are amazed at the outcome under my supervision and some of them tripled their duration at/before the 5th time! In general there is no upper limit of how long you can wear chastity cage but it is a gradual process that you have to adapt yourself and slowly build it into long term.