This energy-body has a horizontal forward flow through the body, which originates from the bottom boundary of the universe and continues forward and up to the top boundary of the universe (it goes much further up and down than illustrated here).
It connects to the forward flow of time in this universe. It’s origins in the Magick-universe were used to make a system accumulate changes over time, rather than remaining in the same state indefinitely (or cycling without change).
Since Life itself can be seen as a flow forward in time, this energy-body helps connect to Life as a whole, which is essential for the body.