Answer:
Mutations
Explanation:
A gene mutation is a permanent change in the DNA sequence of a gene. Mutations can occur in a single base pair or in a large segment of a chromosome and even span multiple genes. Mutations can result from endogenous (occurring during DNA replication) or exogenous (environmental) factors.
C. Dirty hands ,is the correct answer.
workout sessions should be limited to twice a week,
work on several different muscles groups,
increase the weights only when you can do 3 sets of 10 repetition with ease
I mean, find what you want to work on when feeling mentally unstable. I guess just make a goal to what you want to achieve when doing this.