The table below displays the average number of games played in a set at each individual tournament (1997-2007). The ITF do categorize surfaces, category 1 (slow), category 2 (medium/medium fast) and category 3 (fast), though the time of day, weather, temperature and type of ball being used all have a bearing on how fast the courts play.
Report Abuse. 1  If you are lactose-intolerant, milk and milk products can cause diarrhea. 2  usually it is best to stay away from milk products while having diarrhea. 3  worsen.
Lactose-free milks are the same as regular milk, except for the addition of lactase. Regular milk contains the milk sugar lactase, while lactose-free milk does not. Lactase, an enzyme produced by the stomach, breaks down the milk sugar galactose so you can absorb it.eople who have lactose intolerance, a lactase deficiency, have gastrointestinal symptoms when they consume dairy products containing lactose. Commercial milk producers add lactase to lactose-free milk so that you can drink it without experiencing gastrointestinal symptoms. Lactase makes the milk taste sweeter.