Xavier has been using a workout app to track his progress at the gym. lately, he has found that his average heart rate during aerobic workouts is 129. his lowest target heart rate is 137. which of the following will him get the most productive workout, based on the information he has gathered?

What is the style of discipline in which the teacher or parent establishes rules, monitors the child's behavior, then enforced rules by administering appropriate punishment

What are three important public health tools for addressing heart disease? identify the tools, and explain why they are a benefit to public health. you! : )

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?