View Relaxed Pose
The Relaxed Pose is the best pose for skinning your character mesh object. The difference between the T pose and the relaxed pose is primarily in the arms. Instead of being held perpendicular to the body, they are rotated down about 45 degrees, with a slight bend in the elbow. The reason for this is to allow a suitable midpoint position for the arms, and aide in the rigging process when IK is applied (setting the preferred angle for the IK rotations). Also, the relaxed pose offers better skin weighting options, and thus, better skin deformations when the arms are animated.