Context: Unusually for a time trial it did nt come over boring and the good guys won . Afterwards I went out for a run . Kept my heart rate down to allow for yesterday 's exertions but percieved effort remained quite high . Evening spent doing not much , bed by 10 .

Question: What may have caused your run to have more of a perceived effort ?
Options:
0. My heart rate was n't staying down .
1. I was running by 10 and I wanted to be in bed .
2. I engaged in a lot of physical activity the day before .
3. I engaged in a lot of physical activity today .
Answer: 2