What is the major differences between using machine weights and free weights?
Free weights allow you to choose the weight you want to lift
and are more available to use when working out at your local
gym. Machine weights don't require a spotter, however does
not give you a full body workout
Free weights require more coordination, strength, and
balance than machine weights. Machine weights isolates
you to one muscle group while free weights require you to
use other muscle groups to assist in the lifting process.

Which of these is likely to be the best source of valid health information?

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

Explain why methicillin resistant staphlococcus aureus (mrsa) is more prevalent now than it was only 30 years ago. a. antibiotics cause mutations in staphlococcus aureus that lead to an increase in the number of methicillin-resistant strains. b. methicillin resistance causes an infection to spread more rapidly.c. frequent and inappropriate use of methicillin-type antibiotics has provided selective pressure that has resulted in an increase in the proportion of methicillin-resistant strains of staphlococcus aureus.d. diseases like aids have made people more vulnerable to infections from staphlococcus aureus.