Broken bike

I took my bike out of the shed only to find I have broken the front derailleur by stacking carpet tiles on top of it. (stupid stupid) I went to the gym instead. I did a small workout, bench press, olympic clean and press, bent over row and upright row. 3 set of 12 reps, no rest between sets and 2 minutes between exercises. I followed this with 15 minutes on the bike trying to keep my cadence around the 90 rpm mark at 25 kph and 5 min on the treadmill, to get the feeling of running off the bike. My legs felt a little wobbly but I was not on there that long so I think that will increase if I go harder on the bike.