<span>If Tracy has already suffered from chicken pox, it is likely that there are already antibodies in her system due to this exposure that will mean when she next catches it she will recover far quicker and without the need for such heavy medication.</span>
sets are how many times you will do a certain exercise. like bench press you might do three sets by 5 times. so you would do 5 reps thats one set then another 5 reps and thats 2 sets and so on
