The answer should be large vehicles. One should not park next to large vehicles or vehicles that are too close to the white space markings. You should make sure their is enough space to get in and out easily.
It will help you build muscle for sure but you will need to increase the reps if you want to improve further, it helps to build your biceps, pectoralis, and your deltoids
Toxic chemicals are mostly found in waste sites where they dump old chemicals and with that, that could cause health problems because they could either dump it into the oceans where the life is or they will burn it causing pollution.
Hope this helped :)<span />
For an alternative the answer is Tylenol or Advil