Doing a physically energetic job does not grant you better physical fitness. This is due to the fact intensive physical exercise at some stage in work becomes a burden as a substitute than a benefit. People who do a physical job, spend about eight hours at work with a restricted or quick time of breaks.
Susan won't be feeling normal sleep nor normal heart rate because sleep deprivation is a serious issue. She would have an upset stomach and might even have a diarrhea.
The answer would be social environment. Claire of course lost the weight because of her hard work but the encouragement from her friends definitely helped motivate her.
