Many people find that regular physical activity gives them an unexpected benefit. They sleep better and wake up feeling more 61(refreshed),in part due to increased amounts of deep sleep. Deep sleep may play a role in the body restoring itself 62(physically),as opposed to REM(rapid eye movement) or dreaming sleep. Researchers have found that physical exercise,especially 63(done) in the afternoon or early evening,produces more 64(deep sleep) early in the night. 65(Exercise)can also help you get a better night’s sleep in a number of indirect ways. The relaxation and tiredness 66(caused) by exercise can improve sleep.
Exercise encourages weight loss and also may 67(relieve) depression. Exercising later in the day can also help delay the 68(nighttime) drop in your body’s temperature. The 69(benefits) of exercise are especially important for older people,70(since) exercise has been shown to increase the amount of sleep senior adults get in a night and reduce the time it takes to fall asleep. But be sure you finish exercising at least 4 hours before bedtime---working out later than that could leave you too excited to fall asleep easily.
61. a. conscious b. peaceful c. effective d. refreshed
62. a. physically b. mentally c. emotionally d. regularly
63. a. made b. done c. functioned d. conducted
64. a. night’s sleep b. dreaming sleep c. deep sleep d. REM
65. a. Exercise b. Dreams c. Researchers d. Doctors
66. a. recovered b. strengthened c. caused d. reduced
67. a. increase b. relieve c. release d. arouse
68. a. nighttime b. daytime c. dinnertime d. lifetime
69. a. disadvantages b. benefits c. ways d. places
70. a. yet b. if c. when d. since