It's too cold to go out for running recently, so I can only run at home. I feel that running speed is not as fast as running outdoors. I don't know if it will affect the weight loss effect.

It will not affect the weight loss effect, but the key is to exercise for a long time. The best way to lose weight is to do aerobic exercise, jogging or brisk walking. Don't believe those propaganda. You should control your diet properly, eat more foods with high crude fiber content, eat a reasonable diet and increase physical exercise, and your weight will soon drop. I persisted for 4 months, and my weight was reduced from the original 198 kg to 152 kg. Now control your diet properly every day and walk every day 1 hour. For half a year, my weight has not rebounded. I wish you success in losing weight. Perseverance is the key. If you want to persist, you must persist.