How should you use a heart rate monitor?
measure your heart rate before, during, and after workouts
measure your heart rate once a week before workouts
measure your heart rate after every other workout session
measure your heart rate the day after an intense workout

How can a general chart for physical activity recommendations patients improve their overall health?

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides.b) replication of their genomes does not involve proofreading.c) rna viruses can incorporate a variety of nonstandard bases.d) rna viruses are more sensitive to mutagens.

Which of the following methods had the highest risk of transmitting hiv? a) oral sex b) sharing needles c) sweat d) preseminal fluid