We hear endlessly how good exercise is for our health, but you might be (surprise) to know how good.
Helping you breathe better
Frequent exercise increases the volume of oxygen moving through your body. This is makes you fit. Increased muscle tone helps too. Pilates (普拉提) can build core (strong) and improve posture, and so tone breathing muscles.
Enhancing your mental health
Doing something active releases "happy" brain (chemical), such as endorphins and serotonin, which make you feel more positive. The more you do it, the better you'll feel. But you do need (work) up a bit of a sweat. If you've had a bad day, a little bit of exercise is a brilliant stress reliever.
Keeping you young
There may not be an elixir (长生不老药) of youth, but keeping fit (come) close. Just 15 minutes of exercise a day for eight years can increase your lifespan three years. The more you do, the (long) you could live, according to a study from Harvard Medical School. seems that physical activity delays cell ageing and reduces inflammation (炎症), benefits the heart. It can be low-intensity exercise — swimming or a long walk on a treadmill (踏车) at the gym.
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a. from time to time b. have a good effect c. feel discouraged d. there seems to be no explanation for it e. badly in need of repair |
"Class, please line up! Let's welcome Marti," said Ms. Baroni, our tae kwon do (跆拳道) teacher.
I was excited that my best friend Marti would be taking lessons, too.
Everyone said, "Hi." Marti went red in the face.
"You don't need to be shy here," I said to Marti in a quiet voice. "Everyone's really nice."
After warm-up exercises, Ms. Baroni divided everyone into groups. Even though I was a level above Marti, Ms. Baroni told us to practice together. "Jenna, why don't you show Marti some basic kicks?"
I said sure and showed her a front kick. Marti copied it. Her kick was as high as my shoulder. "Great job, Marti! Let me show you something," said Ms. Baroni. She then spent the next five minutes working with Marti. I leaned (倚靠) against the wall and watched Marti copy everything Ms. Baroni did. The more Marti did, the more praise she received from Ms. Baroni.
I practiced my form half-heartedly. "What if Marti became better than me? What if Marti became Ms. Baroni's favorite student?" I couldn't help thinking.
"Watch your form!"
"Who is Ms. Baroni speaking to?" I wondered. I turned and saw Ms. Baroni looking directly at me. Nothing could have been worse.
At the end of class, I took my bag and hurried outside to find my mom. I had planned to wait and say good-bye to Marti, but now I wanted to be alone. For the next several weeks, Marti continued to impress our teacher with her skills. Honestly, I felt a little jealous (忌妒的) of her. And as Marti turned into a star student, I became less and less excited about tae kwon do.
One day, as we walked down the hallway at school, Marti said, "Ms. Baroni thinks I'm ready to take the test for the next level."
I was surprised. "It's harder than you think. Two judges other than Ms. Baroni will give you points," I said.
Marti looked disappointed (失望的). "You don't think I'm good enough to take the test yet?"
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I felt my face get hot, and I explained, "I didn't say that."
"I haven't been a very good friend," I thought sadly.
