Does transcendental meditation conflict with any Christian beliefs? I've seen many testimonies and case studies lauding the benefits of transcendental meditation. It is said that it isn't a religion and people of all religions participate in this practice. As a dedicated Christian my only concern is that partaking in this practice would violate teachings of my faith. Does transcendental meditation conflict with any Christian beliefs?
While it's not always the most reliable source for knowledge, a quick trip to Wikipedia's article on Transcendental Meditation gets us a bit of well-referenced history on the whole Transcendental Meditation movement.  Included in the article is this:


  In the 1950s, the Transcendental Meditation movement was presented as
  a religious organization. The Transcendental Meditation technique was
  held to be a religion in a New Jersey court case. By the
  1970s, the organization had shifted to a more scientific presentation
  while maintaining many religious elements. The movement now
  describes itself on a spiritual, scientific, and non-religious basis.
  This shift has been described by both those within and outside the
  movement as an attempt to appeal to the more secular West.


I included the above because of your statement: "It is said that it isn't a religion and people of all religions participate in this practice.", and the fact that at least part your question seems to be centering around the question of "Would participating in this be participating in another religion".  

The movement absolutely had it's roots in Hinduism, so on the one hand, there is cause for scrutiny.  

However, simply meditating... Is that the same as worshiping Hindu gods? I don't know that I'd be dogmatic on that.  This appears to be one of those gray areas, and ultimately, this is something that you will have to decide, and it will be between you and God.  

I come from a denomination that has members that believe that everything even remotely related to evil has no place in a Christian's life.  Harry Potter?  Satan's attempt to introduce our kids to witchcraft as harmless...  Rock music? Satan's tool for stirring up anger.  Dance? Satan's tool for stirring up lust.  

To them, the idea of participating in Transcendental Meditation is no different than worshiping idols.  Me, I'm not so sure.  I personally don't see that practicing a meditation technique is the same as converting to Hinduism or worshiping their gods.  The technique ma be based on Hindu teachings, but that does not mean that the technique itself is Hinduism.

This may be far-fetched, but as a comparison - suppose someone were to come up with a cure for cancer and the person who came up with the treatment did so based on teachings of a Wiccan herbalist.  Would taking that cure be the same as participating in Wicca?  I don't think so.

Your question also includes the following: "Does transcendental meditation conflict with any Christian beliefs?"

That is going to be next to impossible to answer, because there are a wide variety of Christian beliefs.  Again, there are plenty in my denomination that would say "yes".  And there would be plenty that would say "no."

The real questions here are:

Does anything in TM conflict with your Christian beliefs.

and

Should I participate in it?

We can't answer the first one for you at all.  You should know what you believe.  If you're unsure of what you believe or should believe, then I'd focus on that first.  Once you know what you believe, you could study about TM yourself and keep your eye out for patently non-Christian elements.  Knowing what non-Christian or even anti-Christians teach can be beneficial.  At any rate, you'll need to make your own mind up on that.

As for the second question, there is precedent in Scripture, which may completely nullify my answer to the first question.


  Romans 14:14-23 (KJV) 14 I know, and am persuaded by the Lord Jesus, that there is nothing unclean of itself: but to him that
  esteemeth any thing to be unclean, to him it is unclean.
  
  15 But if thy brother be grieved with thy meat, now walkest thou not
  charitably. Destroy not him with thy meat, for whom Christ died.
  
  16 Let not then your good be evil spoken of:
  
  17 For the kingdom of God is not meat and drink; but righteousness,
  and peace, and joy in the Holy Ghost.
  
  18 For he that in these things serveth Christ is acceptable to God,
  and approved of men.
  
  19 Let us therefore follow after the things which make for peace, and
  things wherewith one may edify another.
  
  20 For meat destroy not the work of God. All things indeed are pure;
  but it is evil for that man who eateth with offence.
  
  21 It is good neither to eat flesh, nor to drink wine, nor any thing
  whereby thy brother stumbleth, or is offended, or is made weak.
  
  22 Hast thou faith? have it to thyself before God. Happy is he that
  condemneth not himself in that thing which he alloweth.
  
  23 And he that doubteth is damned if he eat, because he eateth not of
  faith: for whatsoever is not of faith is sin.


and 


  1 Corinthians 8:4-13 (KJV) 
  4 As concerning therefore the eating of those things that are offered in sacrifice unto idols, we know that an
  idol is nothing in the world, and that there is none other God but
  one.
  
  5 For though there be that are called gods, whether in heaven or in
  earth, (as there be gods many, and lords many,)
  
  6 But to us there is but one God, the Father, of whom are all things,
  and we in him; and one Lord Jesus Christ, by whom are all things, and
  we by him.
  
  7 Howbeit there is not in every man that knowledge: for some with
  conscience of the idol unto this hour eat it as a thing offered unto
  an idol; and their conscience being weak is defiled.
  
  8 But meat commendeth us not to God: for neither, if we eat, are we
  the better; neither, if we eat not, are w
  e the worse.
  
  9 But take heed lest by any means this liberty of yours become a
  stumblingblock to them that are weak.
  
  10 For if any man see thee which hast knowledge sit at meat in the
  idol's temple, shall not the conscience of him which is weak be
  emboldened to eat those things which are offered to idols;
  
  11 And through thy knowledge shall the weak brother perish, for whom
  Christ died?
  
  12 But when ye sin so against the brethren, and wound their weak
  conscience, ye sin against Christ.
  
  13 Wherefore, if meat make my brother to offend, I will eat no flesh
  while the world standeth, lest I make my brother to offend.


Participating in TM is very comparable to eating food sacrificed to idols in this regard.
Paul is teaching that eating food sacrificed to idols in and of itself has no effect on the saved Christian.  The Christian isn't worshiping the idol, and meat is meat. (1 Cor 8:4-8)  Similarly simply meditating using TM isn't the same as practicing Hinduism.  Meditation and relaxation techniques are just meditation/relaxation techniques.

However, reading on in 1 Cor 4: 9-13, you need to be aware that people are watching you.  There may be non-Christians who are watching your actions.  Maybe people you've witnessed to, and if they see you participating in TM, they may think that there's nothing at all wrong with it, either.  They, unlike you , may not know what is Christian and what is not.

Another good comparison would be martial arts.  I was in martial arts of varying types when I was younger.  Almost all of the martial artists I hung out with fancied themselves to be Zen Buddhists to one degree or another.  If they weren't quoting Bruce Lee, they were quoting Zen Buddhist sayings.  Some of them went further and got sucked in completely, some were just posers.  As a Christian, I feel confident that I could practice martial arts again, without getting sucked into the eastern mysticism that tends to go hand-in-hand with the martial arts culture.

TM is pretty similar.  I feel pretty confident that I could sort out the mysticism, determine what is patently un-Christian (if anything), and participate with a clean conscience. 

However, I know plenty of people that wouldn't be able to sort it out.  non-Christians, or those that are Christians in name only (raised in a Christian home, and somehow they think this is enough).  They might say "Hey, if he can do it, so can I.  They could go in and get sucked in, because they don't have the background and knowledge that I have.  (That isn't meant to sound as arrogant as it does.  I just mean I know what I believe, and some haven't given it much thought.)

So, personally, for their sake I wouldn't participate.  This is exactly what Paul was talking about in 1 Corinthians.