Question: what are tss and if?
Answer: The formula for TSS is: TSS = [(s x NP x IF) / (FTP x 3,600)] x 100. Where “s” is workout duration in seconds, “NP” is normalized power (or pace in running), “IF” is intensity factor, “FTP ” is functional threshold power (or pace in running), and “3,600” is the number of seconds in an hour.