For Christians, Muslims and Jews, is it O.K. for a man to do Kegels or should he trust in the power of god?

I mean I know god gave Samson his strength but If I just prayed to be stronger than a lion, Christ said that if you had faith even the size of a mustard seed than you could move a mountain. I have faith more than this, and I do not wnat to invite sin, and know that love is more important thna , and that evn adultery in the heart is unacceptable in gods eyes, but are Kegels ok to perform ,they strengthen your manhood in case you don't know. I am in no way doubting the power of god, but when I wish to increase my running strength I would run, Icannot just pray to be physically stronger. I can pray for god to give me the fortitiude to succeed but not the physical transformation so should I not do kege;ls to strengthen myself? It was inviting sin before but If I do them without thinking impure thoughts I feel it should be fine, don't you agree?