Note: these challenges may not be offered to everyone and there are other forms of challenges that are offered as well. (uponarriving.com)
Now you can see why closing your eyes doesn't make sense as a way to start balance training because it is arguably the most difficult form of challenge to balance. (acefitness.org)
Players will collect ninja cards featuring illustrations of characters from the series, taking on missions and other forms of challenges to raise their skill levels. (animegamesonline.com)