It's as though the female was asking him to push against his physiological limit.

Extreme temperatures can be harmful when beyond the physiological limits of a plant.

VOmax is typically determined during aerobic exercise at or near physiological limits.

He studied human physiological limits and performance at high altitude.

The trainer pushes the client to a physiological limit, which creates stress and vulnerability.

Each species had its own physiological limits which no force of will could overcome.

An increased sense of effort, technical dysfunction and fatigue can ensue when large muscle groups are used beyond their physiological limits.

When skin is stretched beyond its physiological limit, mechanotransduction pathways are activated.

The tables of physiological limits, it seems, need to be radically revised.

At some point, of course, there must be physiological limits to what an athlete can accomplish.