Hot climates: air-liquid heat exchangers with our own blood as the working fluid. Like a dialysis machine, but permanently glued to our backs. Plug ourselves in

Hot climates: air-liquid heat exchangers with our own blood as the working fluid. Like a dialysis machine, but permanently glued to our backs. Plug ourselves in to turn the fan on, use our power packs on the go. Don't sit down too fast, don't run out of juice. Cold climates: same idea with an integrated block heater. Now we can sit in your basements in our t shirts and boxers. Later, our glucose vitamin pumps keep our blood sugar at ideal levels as our digestive tracts atrophy and eventually becomes vestiges. With relief, we can literally feel the heat and sugar spreading from our centers out towards our extremities as we drop in and power on our headsets... Much later, we introduce blood oxygenator units to get rid of those troublesome respiratory issues. Now and in the future, science fiction, pitch deck, and existing tech become blurred together.