Did the interval workout today. I warmed up for 5 min, then alternated jogging for 1 min and walking for 3 min, 5 times so my total workout was 25 minutes. The HR strap wasn't working today so I wasn't able to monitor my heart rate. I think I just wasn't able to position the strap right on my chest. Part of the problem was my sports br4 being too small. I ordered another one last week that will hopefully fit better. Nursing is fun your b00b$ can't fit into any normal sports equipment! Sorry for the TMI....of course I doubt anybody is reading this. I'm mostly doing it for my own record to keep me motivated.