Sprint stairs on my own today as my friend and colleague had to be off work due to her baby being sick and unable to attend nursery.
I had my timer set incorrectly, so I almost sprinted 30 sec the first time, the next three sets were closer to 20 seconds.
I felt wobbly after, and I also had a moment when I got back into the lab that I thought I might vomit.
I think I am putting in enough effort.
I have a difficult work schedule this week, I am just wondering when I am going to fit in the gym.