Stretch out the skin before rolling ?

[Mark182]

If im about to roll my waist, should i use the other hand to grab and pull the skin uppwards so it is stretched out before i roll ?

same question goes for the buttocks, should i pull it downwards to make it stretched out before rolling

Thank you in advance.

[SarahVaughter]

Yes.
 
If the skin is stretched out, it is easier to roll and the needles will penetrate deeper. It is not always possible (rolling the arms for example) to stretch out the skin but if you can, do it.