Manplus during training. A study of 400 meter sprint athletes was conducted and the results show that LH increased in experienced athletes. Least sprinters see their This increase by %. Free This increases it by 0%. On the other hand for the best athletes This dropped by 11% and This free by 2 %. How to explain this phenomenon? The LH secretes This but it turns out that over the years (here minimum years training) the body runs out due to age and the many stimuli engendered, indeed This falls from age 2 . https://thefitnessvibes.com/manplus-vixea/