Did you do a cycling exercise shortly before you got cold feet, where you put your toes on the pedals? Then you accidentally trained your calf muscles and you activated a reflex that automatically tenses the rectus abdominis muscles when there is sufficient ATP in the bloodstream. Almost all muscles are able to convert sugar into ATP. But only the oblique abdominal muscles and calf muscles are able to deposit ATP in the bloodstream. Cold feet occur because the calf muscles cannot supply sufficient ATP for the rectus abdominis muscles, so they are sucked out of the feet.
In the exercises you will train your calf muscles, rectus abdominis and oblique abdominal muscles. Just like the zipper of a jacket pulls the jacket tight around your torso. In this way, tightly tensed rectus abdominis muscles pull the oblique abdominal muscles tight around the rib cage, which stimulates the oblique abdominal muscles to produce the ATP that the rectus abdominis muscles need to be able to contract. This creates a chicken and egg problem. To solve this problem you need the ATP production of the calf muscles to bootstrap the rectus abdominis.
Doctors claim that high blood sugar is caused by food. If you have a sugar sensor and use the rapid insulin marker to indicate in the app when you start/stop an activity, you will see that this is not true. The blood sugar level increases as more muscles are active.
When you start a new activity, the blood sugar level rises within seconds. If you start an activity several times a week at the same time for three weeks, the blood sugar level starts to rise one or two hours in advance. If you stop the activity after three weeks or longer, the body continues to prepare by raising sugar levels for a few months. This is not a problem naturally because your rectus abdominis, obliques and back muscles are supposed to be tensed 24 hours a day to prevent your intestines from hanging out of your abdominal cavity. These muscles burn much more sugar than is prepared for activities.
The Risk
In my experience, ATP in combination with too high doses of Lantus causes sugar peaks, lowers the temperature of the feet and blocks the sweat production of the feet. While training my calf muscles and oblique abdominal muscles, I slowly reduced the doses of Lantus. But of course I do not advise anyone to do this.
In my opinion, ATP protects capillaries from sugar.
The accommodative muscles in the eyes use ATP as fuel. As the ATP level rises, people who are nearsighted see better. I use the quality of my eyes sight to gain insight into the height of my ATP level.
Warning: Check your calf muscles. If there are hardened parts in there, the muscle is damaged. If you follow the method, there is a chance that your body will not be able to bring the toes/foot of that leg completely up to body temperature.