Marc Marquez says his two crashes during Czech Grand Prix practice were caused by trying to conserve energy in left-hand corners, as he continues to manage his recovery from injury.<br>The Spaniard was among several riders to crash in the opening practice on Friday morning, losing the front end of his factory Ducati at Turn 7 after setting the fastest lap time. <br>He then went down again at the ...<a class='more' href='https://www.motorsport.com/motogp/news/marc-marquez-explains-why-he-crashed-twice-in-czech-gp-practice/10831637/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-MOTOGP&utm_term=News&utm_content=www'>Keep reading</a>