So today I got a cheap bike off of OfferUp, practically new though. I took it for a spin and within like 1 mile I was so tired already and my legs were killing me. Is that normal? I feel like I should be getting more distance on it. I’m slightly overweight but not in terrible shape. I usually get in about 20k-25k steps a day and I kayak regularly. Any advice or tips are welcome. I’m still learning what the gears mean too