So true... I cried for 2 days... no joke, I couldn't believe how unfit I was, I think I did 3x 8kg KB Thrusters and almost passed out I was in so much pain. Now I can do 10x 20kg, 10x 16kg, 10x 12kg, 10x 10kg and 10x8kg Thrusters all in a row from heavy to light and back up from light to heavy...