I can't afford classes or videos. The cycling is still plenty difficult and great exercise for me, definitely a mood booster, but I haven't been able to do it much this week because of major thunderstorm threats. So far, no rain today, but it looks bad. Tomorrow says 90% chance, today was 60%.
I only cycled to work consistently for 4 days in a row last week. It is too early to say if that would be enough to rule out the 5-HTP altogther, but I doubt it.