I am curious to know if following the uberman cycle for a month will have any adverse long term effects on my health/cognitive functioning.?

Not known : There is little scientific knowledge about the effects of changing your natural sleep cycle to follow the uberman cycle. My hunch is that there are likely to be problems, perhap subtle ones, with trying to change millions of years of evolution that produced the five stages of sleep that are intimately interwoven with light-dark cycles and circadian rhythms, hormones, neurotransmitters ...