Animal hibernation is a protective action against the unfavorable environment. The main factors that cause animal hibernation are the decrease in ambient temperature and the lack of food. Scientists have proved through experiments that animal hibernation can cause thyroxine and adrenal glands. Reduced function, at the same time, the gonads are developing normally, and the antibacterial and disease resistance of animals after hibernation have increased than usual. Obviously, hibernation is beneficial to them, making them more sensitive and more appetite after waking up the following spring. And all the organs in the body will show the phenomenon of rejuvenation. It can be seen that the muscles of the nervous system of the animal still maintain full vitality during hibernation, but the metabolism is reduced to a minimum. If the following is true, what will most weaken the conclusion? ['Many insects do not hibernate in the form of "pupae" or "eggs", not as "adults" or "larvae".', 'Hedgehog, can sleep for more than 200 days in one hibernation, it will take a long time to recover the original spirit and physical strength after waking up.', 'Some mountain squirrels in Canada hibernate for half a year. During the hibernation, the pulse becomes extremely weak, and the body temperature drops to 5 °.', 'During the hibernation of female bear cubs, let the snow cover the body. Once woke up, there will be one or two bears lying next to it. This is a baby cub produced during hibernation.']