I don't know....I kinda don't feel right about deliberately messing with baby's sleeping/quiet cycles. But having said that, I noticed before that baby became active after I had a bit of soda (I don't drink it often mind you).
I've heard it's not recommended to flash a light in at the baby as they don't know how exposing the baby to light stimulus before it's time can affect its development, or something like that.
Edit, found the link here on it. Copy and pasting the section on fetal vision:
''Japanese scientists have even reported a distinct fetal reaction to flashes of light shined on the mother's belly. However, other researchers warn that exposing fetuses (or premature infants) to bright light before they are ready can be dangerous. In fact, Harvard's Als believes that retinal damage in premature infants, which has long been ascribed to high concentrations of oxygen, may actually be due to overexposure to light at the wrong time in development.
A six-month fetus, born about 14 weeks too early, has a brain that is neither prepared for nor expecting signals from the eyes to be transmitted into the brain's visual cortex, and from there into the executive-branch frontal lobes, where information is integrated. When the fetus is forced to see too much too soon, says Als, the accelerated stimulation may lead to aberrations of brain development.''
https://www.leaderu.com/orgs/tul/psychtoday9809.html
I know this is a different scenario than just flashing a light at the baby but it kind of makes sense not to interfere with the development by shining something in, ya know? I'm sure loads of women have done it and it's fine though, so I guess it's just something one has to decide on their own whether to risk or not.