Really That sounds like a puzzle.
Actually that tells the strength of the impulse.
Big Market makers test hidden orders by clearing Order stacks in the
reverse direction. Meaning to understand the presence of depth and
Strength of market. To do this when the trend is raising first sell and see
if the market could absorb the lots or shallow. That is why when the
Candles are raising there are one or two small candles moving down
then The upward movement resumes. The puzzled line moves up
indicating the strength.

If you see in Advanced Get the white upper track going strain but the
histogram crosses you will notice the rally many times fails.

it may be also called False Buy Signal.

On the other hand if you see the upper white line track also moves up
you will see the impulse is strong and gives you pips depending on your
time frame.

Until you get Confirmation you may use Stochastic Oscillator to measure
the strength a Crude way possibly because you may be using your real
money to trade.

Better to take Wave 3 instead.

The same is the case in a falling market for shorting. Take Care and
All the best.