Hypothetically, if a very strong gravitational wave were to hit you, it would depend on the magnitude and nature of the wave as well as your physical composition and distance from the source.
Gravitational waves are ripples in the fabric of spacetime caused by extremely massive and energetic events such as the collision of black holes or the explosion of supernovae. These waves propagate through space, stretching and compressing spacetime as they pass through.
If an extraordinarily strong gravitational wave were to interact with your body, it would induce tidal forces, which are differential gravitational forces acting on different parts of your body. The extent of these tidal forces would depend on the strength and duration of the gravitational wave, as well as your proximity to the source.
In extreme cases, where the tidal forces are significantly greater than what your body can withstand, it is hypothetically possible that disintegration or catastrophic damage could occur. However, it is important to note that such gravitational waves with magnitudes capable of causing such effects have not been observed in reality.
Furthermore, gravitational waves typically decrease in strength as they propagate away from their source, so the likelihood of experiencing a devastating impact from a distant gravitational wave is extremely low.
It's also worth mentioning that gravitational waves have been detected and measured on Earth, but they are typically very weak and do not pose a direct threat to human beings. The scientific community continues to study and understand gravitational waves, but their effects on individual bodies are still subjects of ongoing research and investigation.