Allen, I had a similar experience last weekend. I went for a 15 mile bike ride before lifting and when I went into the weight room, the weights felt much lighter than usual.
I attributed it to high endorphins. My bike ride involved a lot of big hills and I was definitely feeling the endogenous opioid euphoria before I started lifting.
If that's the case then I think a better warmup is needed and you need to add more weight as it sounds like you are not stressing (i.e eustress) your muscles enough with the weight that you are currently using.
Allen, I had a similar experience last weekend. I went for a 15 mile bike ride before lifting and when I went into the weight room, the weights felt much lighter than usual.
I attributed it to high endorphins. My bike ride involved a lot of big hills and I was definitely feeling the endogenous opioid euphoria before I started lifting.
If that's the case then I think a better warmup is needed and you need to add more weight as it sounds like you are not stressing (i.e eustress) your muscles enough with the weight that you are currently using.