There are no hard-and-fast rules on how rapidly one should progress to a higher level of activity. the individuat's subjective impression of whether or not the body seems to be able to tolerate increased training serves as a good guide. in general it might be reasonable not to progress to higher levels of activity more often than every one or two weeks. how is the word subjective used in this excerpt?

What is the difference between a license and a certificate in the healthcare system? a. a certificate grants the freedom to practice, while a license only confirms professional qualifications. b. a license grants the freedom to practice, while a certificate only confirms professional qualifications. c. medical doctors receive licenses, and nurses receive certificates. d. medical doctors receive certificates, and nurses receive licenses. i'll give you 30