What is the separation of proteins, on the basis of their size

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.

i am in 8th grade and my period started in 5th grade

they won't be regular for a while

dont freak out

mine still arent regular either

make sure u tell ur mom this too

also keep a calendar with every specific detail of your period

if u have any questions ask