Ok--I've not been to the gym or exercising or anything other than some very minor stretching exercises...can we say LAZY

Today I made it to the gym:
1 mile on treadmill alternating incline between 1 and 0
3.5 miles on the recumbent bike

I had to stop as one of my knees was making itself very clear...it hadn't worked that hard for a long time and it was not happy