Losing my religion

Arlin Marshall (1955), photo by Bob Mizer, from, "Beefcakes and monkeys: Bob Mizer's muscle men" via The Guardian. Needless to say, my beefcake days are either well behind me or far ahead.
Me: Bless me, Father, for I have sinned. It’s been a week since my last workout, and I accuse myself of the following sins: I've been indulging in chocolate and ice cream bars and carelessly ingesting carbs.
Gym Priest: Alright, my child, say five "Our Fathers" for your penance, track your eating habits and nutritional intake with an app on your phone, don't forget to take 5 mg of Creatine with a glass of water each day, write down and plan your exercise goals for the week, and remember to stay hydrated.
Me: Thank you, Father
I have genuflected at the altar of weights in great hopes of altering my weight, but I'm stuck and feel like I'm going backwards. I've been trying so hard to get back into "game shape" to do this charity ride by focusing on more difficult rides, biking wherever I go, and hitting the gym for resistance training. Yet, the only resistance I'm getting is from my body. They say, "Use it or lose it," meaning, I assume, the more you use your legs, the longer you'll be able to use them - like a sort of muscle generator. Lately though, rather than getting stronger, it feels like I'm wearing myself out. Aren't there only so many miles my knees can take before the warranty is void? I'm not just feeling worn out, but I feel like I'm wearing out. Not fully broken, but limping towards the finish line.
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