Training it at the gym was practically the only thing I ever did. Apart from feeding it and taking it to the toilet when necessary.
.....interesting. It could be that excessive training caused it to become tired/sick enough (i.e., accumulate care mistakes) to become a Numemon despite whatever stats it had... <tilts head in thought>
...Yeah, if you put the poor thing in constant training except for meals and potty breaks, I wouldn't be surprised if its health began to deteriorate.
In my experience, to avoid tiredness/care mistakes in such a way, for every 3+ hours of training, it helps if you talk to Punimon and let your partner nap for an hour. Maybe even two hours, if you've been going at it for most of the day.
Break up the monotony every so often, cruise through Native Forest and pound a few mooks for fun and profit. You've got around three in-game days from cold start to digivolution. Even if you just focus on training a couple of stats to 100 (Tyrannomon and Centarumon are what I usually end up with for the first Champion on a new file), it shouldn't be much trouble to recruit Agumon, Palmon, and maybe even Coelamon and/or Betamon in that timeframe.
I didn't even know there was an option to nap.
A lot of people seemed to suffer from the Numemon problem despite their best efforts.
I personally never struggled with it much. Training at the gym and not making too many care mistakes usually got me SOMETHING.
Yeah. Go to Punimon inside Jijimon's house, and talk to him. He lets your partner nap for an hour, which recovers tiredness and recovers a bit of HP/MP. After you get enough Digimon to come back to the city, Punimon will move elsewhere, but you can still nap by examining his chair.
After you get the Clinic, you can talk to the guy who runs it and he'll let you recover a lot more tiredness, but you are of course napping longer as a result.
For the longest time, I usually had a Numemon problem... if my Rookie partner was Palmon.
re:World 1: ...did you ever give your mon any training? If your opening partner (which IIRC has base stats far superior to any subsequent Rookie you'll get for a fair while prior to training them) constantly digivolves to Numemon without fail, I can only conclude that you didn't get parameters high enough. Tyrannomon and Centarumon are fairly easy to get, from what I remember...
Heh, there've been a few times that I'd get a Birdramon, and it would digivolve to Airdramon... which would then immediately digivolve to Phoenixmon.