Does the word "challenge" implies a negative nuance?

Native speaker’s answer
Rebecca
No, here, "challenge" does not imply a negative nuance! It's more like a competition or a game that's fun to see if they can succeed at the challenge. In other contexts, it could possibly refer to something negative if perhaps the challenge was negative. Ex: It's been challenging getting my arm to heal after the car accident. => negative challenge Ex: I'm always up for a challenge! => fun challenge for character growth Ex: Shaun challenged me that I couldn't ride my skateboard up this ramp. I'll show him that I can.