Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
metabolic – adj. related to the chemical processes by which a plant or an animal uses food or water to grow, heal and make energy
obesity – n. the state of being very fat in a way that is unhealthy
inconsistent – adj. not continuing to happen or develop in the same way
associate – v. to connect someone or something with something else
cycle – n. a set of events or actions that happen again and again in the same order
rhythm – n. a regular, repeated pattern of events, changes or activities
synchronize – v. to happen at the same time or speed
