10 isn't significant enough, and 20 might raise some eyebrows for Roid use.
5 lbs would indicate potential roid use. Go to the store with this shopping list:
-2 4x3x3/4" 6 oz sirloin
-2 6x3x1" 11 oz sirloin
-2 6.5x3x1 12 oz strip
-2 lbs 93% lean hamburger
-one 38 C bra
-cling wrap
-5 lbs all purpose flour
-tarp
Lay tarp out on a clean, flat surface
In large mixing bowl, mix flour with water and stir into a thick paste. Pour onto tarp. Add food coloring swirls to add artistic flair.
Remove clothing. Roll around on tarp and get nice and slathered. Hair do optional.
Put on bra and insert 6 oz sirloin into cups.
Press 11 oz sirloin onto bicep/tricep areas.
Press 12 oz strips onto thighs. Allow these to dry firmly in place.
With help of Joe Ingles, who appears to have no interest in natural muscle tone, apply 1.5 lbs hamburger to back and shoulders, with remaining on calves, stomach, and touch up areas like inside the jock strap. Wrap body with cling wrap and massage new muscle into tone looking shapes.
Congrats, you are now a very muscular looking person.