My driving commute is 20 minutes. My cycling commute is 35 minutes (with significant effort). The average drive-tru time at Starbucks is 5 minutes. Add in a 5 minute detour off the optimal driving path, and another few since commuting hours are peak demand and will therefore be at the tail of the distribution. Same job, same commute, but all told, relative to a car and a PSL, cycling is net neutral on time with a difference of 600-800 calories.
Maybe that's not true for al (although a 35 minute bike ride with existing fitness gets you a long way surprisingly fast). But one can lift while watching TV. One can do squats while doing laundry. Etc.
Of course, in each case, one of those two options is far less comfortable. For commuting that's particularly true in the winter. But WRT physical fitness, the barrier is almost always "discomfort" and almost never "time".
Maybe that's not true for al (although a 35 minute bike ride with existing fitness gets you a long way surprisingly fast). But one can lift while watching TV. One can do squats while doing laundry. Etc.
Of course, in each case, one of those two options is far less comfortable. For commuting that's particularly true in the winter. But WRT physical fitness, the barrier is almost always "discomfort" and almost never "time".