When taking them, do you stand straight and relaxed or should you be flexing your muscles?

Do both, then you get a decent comparison. :tu:

the before as relaxed as possible and the after flexing all muscle you got :D

the only pic i didnt flex was my 200+ pound self when i decided to start a healthy lifestyle.

from then on i like to see my muscular development by flexing all muscles. it works fine.
ill start takinf unflexed picture at te beach when i reach below 10% BF.
...but im bulking now :spaz: