The researchers tested a new longevity drug on two groups of white rabbits  They injected two identical groups of rabbits with the new drug, then kept one in a cage and the other in a natural environment  The results showed that the average life span of rabbits raised in natural environment was 1/10 longer than that of rabbits raised in cage
As a result, the researchers believe that the relaxed environment is conducive to the function of the new drug
The function of the new drug is closely related to the living environment of the subjects.