Ine's Muscle Experiment 12

As if triggering some runaway chain reaction, Ine felt his body begin to expand rapidly in all directions! His shoulders rose, his arms swelled, his legs nearly doubled in girth! In short order, Ine felt himself bump up against the ceiling of the lab. But he kept growing! Pressing harder and harder into the confined space… and yet it seemed he would not be contained! He groaned as the pressure continued to increase…!

Part 12 of a muscle growth sequence commission for lycanlover777