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.
you could use refusual strategies such as assertivley denying or giving another solution or excuse like "oh why don't we do something else that donesn't sound very much fun to me.