I also found reports linking gelatin with appetite suppression, but not to glycine per se. Glycine is, however, reported to curb cravings for sugar. Japanese scientists have been on the forefront of glycine research, and have discovered that glycine is very useful for those individuals who have trouble staying asleep.
Three strategies that will help you find the main idea are to 1) look for general versus specific ideas; 2) use the topic (the general subject of a section) to lead you to the main idea; 3) use key wordsâverbal clues that lead you to a main idea.
Reading questions on the ACT aren't arranged in order of difficulty, so the main idea questions on a passage might be the first questions on the page. But you're allowed to answer in any order you want, so just circle them, move on to the detail questions, and then come back to the main ideas later.