Also, grammatically "also" can be placed after "can" in your sentence [sorry for all the repetition; purely intentional] and I do think that's its more natural position, but due to the specific context of this sentence maybe you had a good reason, like emphasis or contrast, to put "also" before "can," and I really believe there's no problem with that.
Related to the point I made above about simplicity, it's possible some people might also say some other words in your sentence are unnecessary, principally the verb "help," i.e., they might prefer something simpler like "can significantly lower." "Help" is a kind of "weasel word" in English, that is, its meaning is often so vague that we can use it when we're really not sure of the precise meaning of what we want to say. That is, if you say, "can help . . . lower the blood pressure," a question a reader or listener might have is "how exactly does it (yoga) help? Is the yoga the main factor in reducing blood pressure, or must yoga be done concert with something else, e.g., reducing stress in one's life, to lower blood pressure?" Again, that's something that probably only medical specialists could answer, but it illustrates what might happen whenever you do use too many "weasel words" like "help."
I hope this helps. Thank you again for asking me.