Complex sentence: However, it can be stated that in general noble kava produces a state of calmness, relaxation and well-being without diminishing cognitive performance or influencing drinker's capacity to think clearly; with an initial talkative period, followed by muscle relaxation and eventual sleepiness.
Split into simpler sentences: However, it can be stated that in general noble kava produces a state of calmness, relaxation and well-being without diminishing cognitive performance. Kava may produce an initial talkative period, followed by muscle relaxation and eventual sleepiness.