What potential problems may arise as a result of crispr?

The use of CRISPR/ cas9 revives many previous social and ethical issues with humans, other organisms and the environment, such as taking into account the non-maleficence principle in risk assessment, genome editing in germline, safety issues to avoid ecological impairment or the possible use of the technique for genetic enhancement.

youre right there are

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.