Yoga or Tai-Chi, especially when done slowly and mindfully, initiates the transition. Your movements become more controlled, slowed down, and you already turn your attention inwards.
You tune into your body and start hearing it better. Then, as you proceed to breath awareness, you create a connection with the second aspect of meditation, facilitating the transition even more. Finally, when the third aspect is given full attention – your mind, the merging of the three aspects becomes natural. You are ready to meditate now. You do not need to rush. You are still.