Most effective and fastest way to get rid of this? I tend to get it on the chest/shoulders/back , and how to prevent this?

Stop juicing

accutane works

What's your diet like?
Do you shower often?
How much water do you drink?
How often do you change your bed sheets? Srs

Clean your bed sheets.

Shower daily

All of these factors are the most important? How often should I change my sheets and how much water should I drink ? Gal a day?

Rarely changing clothes and sheets can contribute, like if you wear the same shirt multiple days/workouts in a row. I change sheets every week, dunno if it's often/seldom...
Lots of fat food ain't too good either.

once a week is good, wear a clean shirt every night if you're lazy

shower in the morning/after workouts/before bed

gallon of water is what you should aim for but it can be difficult depending on what you do all day if you can't carry a water jug around

Stop consuming a lot of dairy products/ fast food

Where is your picture?

You promised us!

Also thread #10000 by your stupid ass.