Here are examples of the word/phrase "invigorate" used in a sentence and paraphrased in a sentence...
You should invigorate yourself by eating more fruits.
You should strengthen yourself by eating more fruits.
I will invigorate the new recruit by teaching him our secret techniques.
I will strengthen the new recruit by teaching him our secret techniques.
Walking through the forest of life will some how invigorate you.
Walking through the forest of life will some how fortify you.
Other Examples...