I would say c) increase crash energy because since they are speeding they are more likely at risk of crashing into things or even people.
The answer is the upper back muscles. Hope I helped!
This is when you lose weight, gain weight, then lose weight, then gain more weight than you had before!! It can go on for a very long time. Many obese people suffer from this.
True because they are like man made pain killers that your body produces
