The contacts of the senses with the sense objects give rise to the feelings of heat and cold, and pain and pleasure. They are transitory and impermanent. Therefore, endure them, O Arjuna. (2.14) The Bhagavad Gita
I am learning to endure heat and cold by trying to take a cold shower after my hot showers everyday. Also I go to the public spa and try to extent my sitting duration there, followed by a cold shower. Some meditation in cold conditions is in the plans.
For pain.. I am currently trying to extend my sitting time in padmasana which is up to 40 minutes now. It washes away the karma of pain quite nicely. As for pleasure.. that karma seems to go much easier which indicates that my practice has some way to go..
I have not gone past lesson 90 in my AYP so none of the above is part of the practice yet as I understand, but does anybody do anything similar?
As the blazing fire reduces wood to ashes, similarly, the fire of Self-knowledge reduces all Karma to ashes, O Arjuna. (4.37)