We will be strong and train our self
The answer is a which is the tendency to ignore evidence against your beliefs
I might be wrong but I think the answer is Gerontology.
Hope this was helpful XD
If John stretched while his muscles were cold, the negative effect that could occur is that C. he could injure or pull a muscle.
It is always important that your muscles are "heated" before you start exercising so as to avoid hurting yourself.
