This may occur if: 1  You have a sudden drop in blood pressure. 2  Your body does not have enough water (is dehydrated) because of vomiting, diarrhea, fever, and other conditions. 3  You get up too quickly after sitting or lying down (this is more common in older people).
Wimbledon 2015: Rafael Nadalâs coach says itâs good to talk during play. Toni Nadal feels that coaches are getting a rough deal. Toni Nadal, the coach and uncle of Rafael Nadal, believes it is impossible for a coach not to encourage and communicate generally with a player during a match.
1 Happy Birthday Rafa!  VIDEO: Rafael Nadal steals show during trophy ceremony: âI found a new coach today!â. During the trophy ceremony, Rafael Nadal said he found a new coach as he looked for the fan who yelled out at him during the second set. âI found a new coach today, too.