...nope, I'm one of those humans miss-programmed to secrete dopamine and endorphines when slumping in a chair coding and eating chips, and to feel depressed to death when doing physical effort. For those other 99% of humans programmed with the normal response to physical effort that you describe: you don't know how lucky you are! (Anyhow, will carry on, ugly body + diabetes + heart-attack and/or stroke at 50 still sounds a bit worse than working out a bit feels :P ...still on the look for some pharmaceutical "cheat codes" though, there's gotta be some 0-days in the human body/mind that we can hack to get to avoid that work, though maybe risk/benefit might not be worth it here)
Yes, I do intend to challenge your position, but I mean no offense. Maybe the problem is not slumping nor coding, but the chips. The first step to fixing health, be it physical or mental, is fixing one's diet.