Multiple energy refills

I used a free energy refill from being afk and went to gym to train it. It said I had no energy to train with and didn't work the first time, I found this unusual cuz I train this way everyday without mis-clicking. I went back and did it again and it worked. I was thinking about how tomorrow I should wait til the start of the new day to take advantage of two refills and save money on my Choco jump training. So I mindlessly went back to the point building and clicked on point refill expecting it to say I used my daily refill already. But I instead was able to refill so I did it and it worked twice while I trained the energy, and then I stopped doing it to write this. I think I can keep doing it now. Logs and my stats show the energy I trained from this was used.