[SIZE="3"]No. Venous blood is a biological necessity. Kriya Yoga has nothing to do with "stopping the accumulation of venous blood." The acceleration of that process is better suited for diet and hatha yoga. By the time the yogi has reached this pinnacle called Kriya, his bio-sysyem is already completely cleansed and amazingly strong.
Unfortunately, PY diluted and distorted the truth of the kriya yoga of Sri Lahiri Mahashaya in his book "Autobiography of a Yogi" - the historical Kriya Yoga is exclusively a mystical path.
Yes it is true that Kriya Yoga is an ancient science, but it is a science based on a much more dynamic and complex subtle energy system.
The things you speak of are preliminary requirements for the yogi, such as a totally cleansed biological system (clean blood, proper assimilation/digestion, proper diet, herbal preparations, and other treatments)...
True kriya yoga is very defined and specific, it classically consists of 7 levels, and 4 phases.
It can be found only by those beings ready to understand the ultimate and final confrontations/problems of life.
Much love and peace.