Beautiful day for a ride

I set out this morning for my usuall ride. The temperature was just perfect, the winds not so much. Neverless I rode my usuall course, but felt like I was pushing against a solid wall. I thought it was the wind, but I was very wrong. It turns out I didn't check my tire pressure for a number of days and the tires were very soft, hense the slow and hard ride. I will check pressure more often.