You spin out on a trainer in highest gear when you try to stand and you have to get off bike and finish walking up a hill.
I have been riding for about 9 months and have lost a lot of weight. I am down to 275lbs. and being 6'4" did not think I was in to bad a shape. Been riding trainer lately with weather being poor lately. Went for a ride today where there were some hills but one in particular really wiped me out. It was only 400' but very steep being 25% for last bit. Weight is definitly an equalizer when riding hills. Need to do a lot more work and lose a lot more work.