Labels:book | bulletin board | hakham | web site OCR: HELP Test your strength Try these simple activities to test the strength of your muscles Activity Work with friend One person lifts cauple books The other should make sketches of any changes in muscle shape in the arm Remember that muscles can only pull not push Which muscles pull when you lift the books? Which muscles pull when you lower the books? Activity Test the strength of your fingers by picking up some bathroom scales. Press your thumbs downwards ont the scales and record the weight achieved Now repeat the activity this time put the scales ona table and press both fists down on the scales Write down the weights achieved Repeat the activity again. this time compare the weight achievec by using the right and then the left hand strenath afriend Jeft
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