| 1 | The brain needs a continuous supply of blood. | |
| 2 | Your baby' s heart begins to beat and pump blood this week. | |
| 3 | An insufficient blood supply accelerates fatigue and increases the risk of injury. | |
| 4 | Your heart pumps more blood, faster, which increases your blood circulation. | |
| 5 | There's more blood flow to the head, more neurons firing, more brain activity. |
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