Answer: Yes, because Sam is experiencing PTSD.
Explanation: PTSD is a psychiatric disorder that occurs to people after a traumatic experience. Since Sam survived a very bad car crash, he is traumatized and should seek professional help.
Hope this helps! :)
Answer:
Cognitive behavioral therapy
The answer is 2000 calories. My guess is that is because you need to burn so many but gain so many to get energy. This is a way to not gain weight.