Repetition is repeating a certain exercise. Sets within a workout is how many repeations you do at one time. For example you can do 5 squats, 3 times. The 5 squats are the repeations and the 3 times are the sets. It is important to do reps and sets to build up endurance and gain muscle over time. I hope this helps!
The reason that no alcohol is considered safe during pregnancy is because of the risk of fetal alcohol syndrome. Fetal alcohol syndrome occurs when the pregnant mother drinks excessive amounts of alcohol. The alcohol passes through the placenta and into the baby's blood stream.
