Two pairs with different demands
A row followed by a leg exercise gives the primary pulling muscles some time before the next row. A row followed by a curl adds more work for muscles already involved in pulling. Both are supersets; they are not equivalent recovery arrangements.
Consider the clock as well. Forty seconds doing another exercise plus a sixty-second pause provides about one hundred seconds between starts of relevant recovery periods, depending on the sequence. The pause written on the program is not always the entire interval between sets of the same exercise.
What to watch in practice
- Does the second exercise remain controlled?
- Does equipment setup make the pairing awkward?
- Is breathlessness limiting a lift that was intended mainly as strength work?
- Does the pairing occupy equipment others need?
More demanding does not automatically mean more effective. If pairing exercises makes the priority movement consistently less productive, straight sets or a different pairing may fit better.
A reasonable comparison records both the exercises and the arrangement. “Three sets each” leaves out whether those sets were completed fresh, after a related movement, or while still recovering from a demanding whole-body task.
