You do you, Alexei. For me cringe comes from people being inauthentic. Chasing likes. Seeking approval. Your running video sounds truly authentic - you sharing yourself when you were feeling flow.

Sometimes I think humans put each other down when we’re feeling bad about ourselves. Maybe your father has a twinge of jealousy that you have found your passion. Any embarrassment he feels is tied up to his own inner world. It’s a him problem not a you problem (so long as you stay authentic). Shouldn’t he be proud of his son who is testing his own physical and psychological limits and putting himself outside his comfort zone?

I see you as a searcher. Perhaps we all are. Keep searching.