Diana,
I don't presume to know the answer to this, but based on my own experience there is no problem. I have even experimented with doing some asanas immediately before and after the SFQ. I feel like I maintain the energy longer if I do the SFQ after the yoga.
I am referring to simple Hatha Yoga without pranayama. The methods employed in the breathing and intention while doing pranayama might conflict with SFQ, although an advanced practicioner could probably integrate them.
Michael
