"270 https://courses.candelalearning.com/fitness1xmaster/chapter/introducing - the - 2008 - physical - activity - guidelines - for - americans/ Health Benefits of Physical Activity https://courses.candelalearning.com/fitness1xmaster/chapter/physical - activity - has - many - health - benefits/ Guidelines for Adults https://courses.candelalearning.com/fitness1xmaster/chapter/active - adults/ https://health.gov/paguidelines/ https://health.gov/paguidelin es/pdf/paguide.pdf Avoiding Injury and Staying Safe during Physical Activity https://courses.candelalearning.com/fitness1xmaster/chapter/safe - and - active/ Borgs R ating of Perceived Exertion https://courses.candelalearning.com/fitness1xmaster/chapter/borg - rating - of - perceived - exertion - rpe - scale/ Target Heart Rate and Estimated Maximum Heart Rate https://courses.candelalearning.com/fitness1xmaster/chapter/target - heart - rate - and - estimated - maximum - heart - rate/ SMART Goals https://www.acefitness.org/fitfacts/pdfs/fitfacts/itemid_2637.pdf\n\n271"