Seconds pro app on iTunes I wanted to share an app that I have started using called Seconds Pro.  It is free to download and then you can pay to purchase the full version, and it is a circuit training or interval training app.  I have been using it as a warm up for some of my less aerobic impact units (like volleyball). Today my G7 class had their volleyball lesson.  Before the lesson I set up a Circuit with 1m30s interval/ 10s rest/ 40s interval and I set it for the desired number of repetitions.  I then had my class split up into 4 groups (with 4 in each…