In Pushups: Is running enough? (question for those who have lost weight

"What was the secret, they wanted to know; in a thousand different ways they wanted to know The Secret. 2 Mile - 11:29 (10/09/10) 5K - 18:55 (07/02/10)10k - 43:21 (06/7/09)HM - 1:26:40 (05/07/11)Marathon - 3:11:04 (11/7/10)Age - 48 (as of Oct, 2010) Running & good eating habits have allowed me to drop 50+ pounds. Running is primarily a sport of competition against oneself, and the stopwatch is the ...Pushups