After his check-up, the doctor smiled at the elderly man and said, “Well, you seem to be in great shape! Any health concerns on your mind?”

“Actually, yes, doc,” the old man replied. “Every time I make love to my wife, after the first round, I’m hot and sweaty. But after the second time, I’m freezing and shivering. What’s up with that?”

Curious, the doctor decided to examine his wife as well. After finishing, he reassured her, “You’re in perfect health! Do you have any concerns or questions for me?”

She shook her head. “Nope, I’m all good.”

The doctor scratched his head. “Well, your husband mentioned something odd. He says after the first time you make love, he’s burning up, but after the second time, he’s shivering like it’s winter. Any idea why?”

The elderly lady rolled her eyes and chuckled. “Oh, that silly old man… That’s because the first time is in August, and the second time is in January!”