falconvalley
Absentee Dad of the OOTSK, Runner, Cat Frustrator
My work schedule threw a curve into my running, If I don't get hills in today I will tomorrow. They are "fun" from a challenge perspective at least.
The good thing is that's ok! Because of how your body reacts to stress, you have a certain amount of time to stress it in a specific way to get the results you want. Someone who specializes in fitness would be more knowledgable about this, but I'm sure it's directly related to the cycle you go through, with recovery and adaptation. When I ran Cross-Country in HS, our couch told us that roughly 2 1/2 weeks is the cycle to consider. In other words, it takes about that long for the body to completely adapt to what you did today.
So, you don't have to do hills today. As long as you check off your list in that cycle, you've done the job. The trick is to also be rested enough for each workout. You wouldn't be able to put all your quality work off until the very end of the cycle and expect to be able to get it all in, effectively. Generally, most people can handle 2 quality days in a row (for a specific stress) and then need a day off. Stick with a max of 3 quality days a week for each stress. Elite Athletes will do 4 a week for a period if time before a big event, but that's a lot of stress for most of us. Basically, in my long winded response, I'm trying to say that putting off hills today will not hurt you at all!