On walking meditation one is advised to be concentrated on the 3 phases of walking: observing the raise of the feet, the pushing forwared movement and the pressing feeling when touching the ground. Later one must learn to do the same but getting attention to 6 phases instead of 3. Now, my question is: should you do that always concentrated on the same foot or do you alternate your attention to the feet?
For example, should i get attention to:
1) raise, push, press, raise, push, press, raise...always on one of the feet (for example, always the left foot).
2) raise [attention on Right foot], push [R], press [R], raise [attention on Left foot], push [L], press [L], raise [R], and so on...
Wich one is the most adbisable way? In the books that i read that point is not very clear.
Thanks for the anwer!
PS: Sorry if this is a Theravadan tradition, but i hope that some of the people are able to answer it.