I've been sending Reiki to a client with back pain*. I send at different times of day. I meditate, usually with my hand over my heart. Sometimes I extend my hand in the direction of the client's home. So I sent the other day, and emailed an update and warm wishes to the client.
The client emailed right back. Said they were working and had to stop because of tingles running up down and all around. Took the opportunity of the work break to check emails and found my message. The tingles occurred right when I sent Reiki.
The client reported no pain for the two days I sent Reiki. yay
*Some details altered/obscured to protect client's privacy