Please do not create an icon that represents a dumbbell, barbell, or kettlebell, as we do not want it to be tailored too much towards "weight lifting", specifically.
We're looking for something simple, sleek, eye catching, and very impactful. Something that inspires action.
Update: We like the "modern 2.0" style font logos, where the words 'fitness' and 'challenge' have some diferences to them, as if each word has the perfect font to fit the personality and meaning of each word. Either, with one word bolded, the other not, or one word one color, with the second word a different color, or a different font per word that best exemplifies THAT word. Hopefully, this helps!