Let's put a cap on how much excess energy the body can store as fat. Sure, some amount is fine and has a number of uses, but just let me poop some excess calories out. I'd only need more if I were to hibernate.
Thinking on it, I want to hibernate too, please.
While we're at it from animals, how about upping some of our regeneration? Teeth don't regrow? Naw, constant regen please. I get too big of a cut and I get a scar? Let's let everything regrow from being lost if you can survive without it. Also why doesn't the brain heal? Most important part of the body and each crack's there for life. Let me get my serotonin back already, slacker.
Also what's with this getting assigned a gender thing? You don't even get to know what it means before you have one! And then we build society as if this coin flip was the seed to the tree of life. Let people choose and switch naturally, please and thank you.
We should not get our adult teeth at 7 then no more ever. We need at least one more set.
I don't think balding is useful, agree that could go.
Fertility should be manageable without using all the devices, hormones, etc. Like it should be a positive choice not a default state we have to harm ourselves to avoid. And I don't think we need menopause either. Just turn on fertility only to get pregnant.
(ETA- I also think sexually transmitted diseases should not exist at all, they seem like religious fundamentalist biological warfare, but not sure what change in a human body could accomplish this and leave the pleasure intact. )
Appetite is 100% linked to calories needed. You still enjoy food, but the moment you swallow enough calories for whatever you did since the last time you ate, you have zero appetite and anything put in front of you loses all appeal.
Terrible for survival situations, great for modern life where an abundance of food is a bigger problem than a scarcity.
The ability not to pee myself every time I sneeze, run or jump after giving birth vaginally would be pretty nice. Even without doing any physical therapy.
No more accidentally biting my tongue or the inside of my cheek while eating. Sometimes I'm just excited for some good food and it just gets completely ruined :(
Appendix not coming from the factory is a big one. A slightly better immune system that can get through the blood/brain barrier and kill rabies/amoebas, and other brain infections like TB (without shredding brain tissue) too. If a virus like rabies gets past that barrier, you are 1 0 0 % B O N E D as your immune system is largely locked out.
Wider uterus/vagina too. Human babies have massive heads that don't fit through too well. It's like an orange on a toothpick. Making a smaller baby could be a possibility, but survivability would potentially go down.
For very tall people: a larger and stronger heart organ. A second one acting like a smaller turbo would also help. Heh. Failover cluster hearts. You'd probably have to have stronger veins and tissues as a result though.
I don't care about balding (and I have been since 20s). Just a healthy body reset every decade or two/whenever necessary. Get the metabolic rate up, clean up all the junk from the environment that has polluted the DNA and reduced the telomere lengths (whatever the correlation/causation there). Just a "take the body to the shop" type of repair possible. A chance to live for centuries.
Body hair should have multiple sliders like a video game avatar. Wanna be furry all over like a Persian cat or a poodle? No problem. Want to be smooth as a dolphin? Also no problem.
Iirc there are some reptiles with two sets of eyelids on each eye, the inner one being transparent, so they can close just the one while under water or in like dusty/windy conditions, but still be able to see.
I'm pretty sure the major things that need to change are in the brain. Predeliction for violence and hate, addiction to controversy and toxins, and whatever makes people stupid enough to support facists.
Our bodies need some trace metals, problem is it can't differentiate between metals it needs and metals that will kill it. "Hell yeah, delicious zinc" as it noms down on lead instead of pooping it out.
The ability to breathe underwater - or if that is too much of an upgrade to ask for, the ability to hold your breath for much longer periods of time so that we could spend significant time underwater.
Especially seeing as the planet's surface is over two thirds water!
Boobs just stay full and up, despite aging, breastfeeding, etc.
if we are going to have periods, at least make them painless.
Cells just shut down cancer every single time it starts, making it obsolete.
You wouldn’t get out of breath at the top of a staircase/big hill if there’s anyone nearby.
Improve the birthing process so you don't have to rotate just to fit on the way out. Either make babies smaller or vaginas bigger (in which case penises would have to compensate I guess)
Change that double helix into a quadruple one for extra redundancy, making it harder for it to gain irreparable damage. Also, make it a loop rather than a straight line so the ends don't get shorter with each replication. And remove that dementia bug that has a greater chance of showing up the longer run time is
Baby teeth last longer. What's this bullshit about your first set of teeth lasts 5 to 10 years, then you're supposed to make it 60+ on the only other set you get? I'd make baby teeth last about 20 years.
If the body couls generate muscle without needing to excersize first that'd be cool. But I guess that's why steroids were invented and those have some side effects
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