I use a chest strap when i do HITT on the elliptical. I stream my HR on my phone to be able to monitor it. I noticed that sometimes my HR would drop to very low values and by looking under the watch, i would see the lights flashing. So the chest strap connection would drop and switch back to wrist. I have a feeling that is due to the machine having Ant + also and interfering.
Today i decided to take off the watch and put it on the elliptical. Well, when the chest strap connection dropped, i found out that my machine has a heart beat of 70 !!!! I did an 25 mn exercise and half of the time, i had a 70 average for the elliptical. So it is alive. I wonder if it has feeling too !!!