For foods u can put fruits, vegetables,meat,protein,carbs
Surgical scalpel is re useable because it can be easily sanitized
It is more cost effective to work at home but you will have more focused at the gym rather than working out at home because if you're at home sitting on the couch you most likely won't want to get up and work out but if you force yourself to go to the gym once you already there you will work out more in focus more and you have more options for exercising at the gym since there are more machines