[Mark Rippetoe]

Okay, you assmunches. Here are two cases:

Zach Evetts
Age: 20
Bodyweight on 8/27/09: 162
Bodyweight on 11/16/09: 217
Bodyweight gain: 55 lbs.
Seven site skinfold sum: 139mm
Bodyfat: 18.40%
Lean Body Mass: 177 lbs.

Initial bodyfat percentage data not available, but his before-picture is an accurate representation of a male at 10% or below.
Assuming 10% bodyfat on 8/27/09
LBM @ 162: 145.8 lbs.

Gain in LBM in 11 weeks: 31.27 lbs., or 2.84 lbs./week
Gain in bodyfat in 11 weeks: 23.73 lbs.
For an approximate LBM gain of 60%


Cliff Swanson
Age: 27
Bodyweight on 7/15/09: 175
Bodyweight on 10/15/09: 220
Cliff's bodyweight has remained constant for the past month due to being off-program, his skinfolds were taken today.
Sum of seven skinfolds: 133mm
Bodyfat: 15.30%
Lean Body Mass: 186.34 lbs.
Again, initial bodyfat percentage data is not available, so we will assume two scenarios:

Assuming 12% bodyfat on 7/15/09,
LBM @ 175: 154 lbs.
Gain in LBM in 12 weeks: 32.34 lbs., or 2.69 lbs./week
Bodyfat gain in 12 weeks: 12.66 lbs.
for an approximate LBM gain of 60%

Assuming 10% bodyfat on 7/15/09,
LBM @ 175: 157.5 lbs.
Gain in LBM in 12 weeks: 28.84 lbs., or 2.40 lbs./week
Bodyfat gain in 12 weeks: 16.16 lbs.
for an approximate LBM gain of 56%

The point here is that there is no scenario or assumption possible in these two cases that is consistent with a LBM increase of less than 2.40 lbs. per week.