how much electrons is needed/diminished to gain stabilty?
I wouldn't worry too much about your older horse if it's growing good thick coatGive it more hay if you're worriedThat is what helps keep them warm, the digesting of food and hay takes longer and produces more heatBlanketing can cause problemsWe've had it cause severe rain rot, because it wasn't that cold and the horse would sweat a little and the warm moist environment under the blanket caused rain rot to form over his entire bodyAlso, our older horse couldn't lift his tail as high because of the blanket and frequently had to have the poop cleaned from his legsWe won't be blanketing next year unless it gets down to around 20You can actually interfere with there natural heating system by blanketing too muchTheir body is trying to warm their neck and legs and cool their torsoAs for the other horse I would let him grow a coat and just keep it well groomedThis will prevent the need for blanketingIf you do shave him then you'll need blanketing anywhere you've taken away his coatI'd just not ride him as hard and let him cool down on the return rideYou'll have a blanket on just as long or longer than a cooler and yet again the wet and warm can easily breed bacteria.
I'm not sure if this will help you but if you bring your second horse in at night leave the lights on in his stallHorses shed when the days get longer so leaving the lights on until later at night will cause him to loose his winter coat earlyIt's funny but it works.
aluminium has 3 electrons in the outer shellit has to therefore lose these 3 electrons to a non metal which accepts these electrons