TutorABC- Exercise may improve memory

**Vocabulary:

1. onset 開始、著手

2. dementia 癡呆

3. markedly 顯著地

**Useful phrase

1. mild= a little bit

2. sign up for a yoga class 報名參加

3. crystal clear

4. pull a muscle 拉傷肌肉

5. 運動有很多優點-->benefits

6. intensive workout

7. 會受傷--> might get injured