“The incessant driving of the pen over paper causes intense fatigue of the hand and the whole arm because of the continuous ... strain on the muscles and tendons.” WholeHandsCausesHealthArmsPaperDrivingIntenseMusclesPensStrainFatigueIncessant Book:Diseases of Workers Source: Diseases of Workers
“Those who work standing ... carpenters, sawyers, carvers, blacksmiths, masons ... are liable to varicose veins ... [because] the strain on the muscles is such that the circulation of the blood is retarded. Standing even for a short time proves exhausting compared with walking and running though it be for a long time ... Nature delights and is restored by alternating and varied actions.” LongRunningActionScienceBloodHealthWalkingExerciseProveLong TimeStandingDelightMusclesVeinsStrainExhaustingLiableShort TimeCirculationCarpenterRetardedMasonsSawyerCarverBlacksmiths Author:Bernardino Ramazzini
