My fiance is working out of town these days, and it is really easy for me to stay in bed when the alarm on my phone goes off, instead of getting up to work out. I had him record a voicenote for me on my phone, and I use that as the tone that wakes me up.
I asked my fiance to set his alarm for the same time as mine. If he is getting up to help and support me I don't have any excuse to NOT get out of bed and work out. He used to be a bodybuilder so he is big help with my strength training and correcting my form.